dark · editorial · serif · sans · mono · spacious
Resend
Pure-black canvas with Domaine Display serif at 96px and Commit Mono code chips — email infra that thinks in italics.
By webdesignhot · resend.com
$ npx design-md add resend
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Adidas Pure-black sport-utility, AdihausDIN/adidasFG uppercase, three-stripe geometry — the engineering canon for global sportswear. Adobe Creative-suite chrome — paper-white canvas, magenta-to-orange wordmark gradient, and Adobe Clean carrying every product grid. AgentKit Three swappable themes for AI agent products — editorial dark, daylight bright, fintech cool-blue. Airbnb Pure-white marketplace canvas with one Rausch coral and Cereal — generous photography, soft pills, modest type. Airtable White-canvas editorial workflow software with full-bleed coral and forest signature cards punctuating a near-black pill-CTA system. Alibaba Electric orange `#ff6a00` + dense merchant grids — the global B2B wholesale floor as a website. Amazon Smile-orange CTA, Amazon Ember sans, dense product grids — the canonical everything-store interface. Amazon Web Services Squid-ink navy with Smile-orange CTAs — the densest tile-portal on the cloud-platform internet. Anthropic Editorial broadsheet for AI safety — cream canvas, Anthropic Serif body, terracotta clay accent, magazine geometry. Apple White-canvas product theatre — SF Pro Text, 980px pill CTAs, and a single-blue accent system. Apple Music Pink-red gradient hero with album-grid kinesthetics — SF Pro precision, signature `#fa233b` brand pink, glassy dark canvas. Apple TV+ Pure-black cinematic theatre with SF Pro and ruthless minimalism — content as the only voice. Arc Browser-as-personality marketing — buttery cream canvas, Marlin Soft display, hand-tooled blue-and-coral palette. Are.na Bare grey-and-orange minimalism — a single Helvetica-class sans, hairline borders, and a stubborn refusal to optimise for engagement. Asana Approachable work management in soft purple — Asana Sans at modest weights with a rainbow accent palette and warm sky-tinted whitespace. Astro Cosmos navy canvas with violet-to-orange brand gradient — Mona Sans display, Inter body, Astro''s star-chart MPA framework dressed as an observatory dashboard. ASUS Republic of Gamers red `#cd0000` on black with bold sans — Taiwan engineering meets esports brutalism. Audi Vorsprung durch Technik on near-black — Audi Type sans, four-rings precision, and a near-monochrome canvas with `#bb0a30` reserved for sport. Auth0 Twilight-blue dark canvas with TWK Lausanne 300 display + Aeonik body — the original identity-platform aesthetic. Axiom Deep-navy observability with a cyan electric accent — Inter for body, JetBrains Mono for every event label, and a structural grid that reads as logs at planet scale. Axios Smart-brevity in chromatic form — blocky white canvas, Tiempos-flavored Atiza serif, signature `Why it matters:` time-bars and bullet-first prose. Base Coinbase-adjacent L2 minimalism — coinbaseSans on white, signature electric blue Baseten White canvas with Inter and a signature `#6c5ce7` purple — ML model deployment dressed in approachable workshop chrome. BBC News Signature BBC red (`#bb1919`), Reith Sans + Reith Serif, the global broadcaster authority typography of the world''s public-service news. Bear Off-white canvas, a custom bearsans display, a red bear icon, and tealish handwritten underlines — a Markdown notes app dressed as a Mac Pro magazine. beehiiv Aggressive black-on-yellow newsletter punch — heavy display sans, hyper-flat cards, and a `#ffd60a` highway-yellow that reads like a tabloid front page. Binance Trading-floor near-black with a single high-voltage Binance Yellow doing all the brand work — BinanceNova for type, BinancePlex for numbers. Bloomberg Iconic black-orange financial broadsheet — BWHaasHead headlines, AvenirNextPForBBG chrome, terminal-grade data density. Bluesky Sky-blue `#0085ff` on bright white with Inter sans — the AT-Protocol social network rendered as airy, federated, open. Blur Pure-black canvas, neon `#ff8700` orange voltage, and JetBrains-Mono-default everywhere — brutalist NFT trader terminal as competitive instrument. BMW Corporate-blue calm — BMW Type Next on a cream-tinted white, dark navy hero bands, and the M-stripe triplet in reserve. BMW M Performance black on M-blue/M-violet/M-red — the motorsport variant that turns BMW corporate into track-day theatre. Booking.com Deep-blue commerce engine — Bookin Sans on white, yellow CTA voltage, dense booking-funnel maximalism. Bose Pure black canvas, Helvetica restraint, and premium-audio confidence — sound presented as engineering art. Brex Cool grey-blue surfaces, magenta-to-purple-to-indigo gradient, Söhne 600 — fintech as fast, modern, slightly flashy. Bugatti French-engineered austerity — pure black canvas, three Bugatti typefaces, and full-bleed photography as the only voltage. Bun Cream canvas with chunky pink accents and the wide-eyed mascot — a JS runtime dressed as a 1970s bakery sign. Cal.com Open-source calendly with one bold custom font — Cal Sans on a soft `#f4f4f4` paper canvas. Calm Signature `#0066ff` deep blue + Aktiv Grotesk + meditation-deep cool atmospheric calm. Capacities Cream-yellow canvas, Inter at 700 with a Crimson Pro serif fallback, and a yellow underline as page ornament — a PKM that thinks like a sketchbook. Cartesia Bright clinical white with a single deep-blue action — voice-AI presented as scientific instrument rather than consumer product. Cash App Electric `#00d54b` green on near-black, Cash Sans monospace-flavoured geometry, and p2p-money youth aesthetic. Character.AI Cool zinc canvas, custom atHauss sans, and dark pill CTAs — a roleplay social product dressed in TikTok-grade neutrality. Chevrolet Gold-cross American classic — Louis sans on white with a `#cd9834` bowtie, a `#003876` corporate blue, and Camaro/Corvette red drama in reserve. Claude.ai Cream paper canvas, Anthropic Sans for body and Anthropic Serif for the headline — an AI assistant set in literary type. Clerk Geist + Suisse on near-black canvas with `#6c47ff` violet CTA — the drop-in-auth dev-tool aesthetic. ClickHouse Near-pure black canvas with electric yellow as the brand voltage — database performance dressed in voltmeter chrome. Cloudinary Media-API technical infrastructure in confident blue — Inter at modest weights with a deep navy-blue brand and a single chromatic accent for media moments. Cohere Stark white editorial canvas with deep green-black product bands and a CohereText/Unica77 type split. Coinbase Institutional-grade calm — pure white canvas, a single Coinbase Blue, and Coinbase Display set at weight 400 instead of 700. Composio Near-black canvas with deep-electric-blue voltage and a 2x2 terminal-mockup hero — agent infrastructure dressed as developer instrumentation. Corsair Yellow `#ffff00` lightning on black with Roboto — RGB-everything peripherals and PC components. Costco Warehouse blue + signature red, Helvetica utilitarian — bulk-buying signage translated to web. Coursera University-blue `#0056d2` on warm-white parchment with Source Sans — the canonical online-degree marketplace. Cursor Warm cream IDE-marketing — `#f7f7f4` canvas, `#26251e` ink, custom CursorGothic display, JetBrains Mono code, vivid orange accent. Datadog NationalWeb on white with the iconic `#632ca6` purple — observability dressed as an enterprise dashboard, structurally dense, chromatically restrained, multicolour where the data demands it. Deel A warm dark canvas with electric coral and orange accents — global payroll dressed as a confident product portrait. DeepSeek Deep-blue Chinese-tech minimalism — a research lab dressed in `#4d6bfe` and stark white space. Dell Pragmatic blue `#007db8` with custom Roboto-derivative — business-first PC commerce since the dorm room. Deno Inkwell black on warm white with the dinosaur mascot — TypeScript runtime as Eric Carle children's book. Descript Cream-pink canvas, a custom Brett display serif, and a wine-dark CTA — an AI video editor that ships like a magazine. Discord Indigo-ground hangout — gg sans body, ABC Ginto Nord display, 12-16px tile radii, white pill CTAs. Disney+ Deep navy gradient streaming hall with custom Inspire display sans and the unmistakable Disney+ wordmark arc. DoorDash Signature red-orange CTA, custom DoorDash Sans, delivery-funnel commerce — the dominant on-demand local marketplace. ElevenLabs Near-black voice-tech ground with white voice-wave aesthetic — Inter at studio scale, pill CTAs, and a single saturated accent that reads as both wayfinding and brand. Epic Games Pure-black canvas with custom Brutal Type / Heading Now display — Fortnite-saturated marketing meets PC-storefront merchandising. Ethereum Off-white canvas, ethereum-blue `#1c64f2` voltage, and Inter + serif duet — community-owned protocol as open documentation. Etsy Burnt-orange CTA, Graphik humanist sans, handcrafted-warmth aesthetic — the marketplace for makers and small batch. Excalidraw Literal hand-drawn whiteboard — wobbly SVG strokes, Virgil-style handwriting, and a deliberately primitive UI that turns digital sketching into nostalgia. Expedia Navy commerce + Mango yellow voltage — Expedia Sans, dense travel-funnel density with One Key loyalty colour-coding. Fantastical White paper, Effra geometric sans, full-round blue pills, and a rainbow of app-icon glass squares — a calendar app marketed like Apple''s Pro Apps. Ferrari Cinematic editorial in near-black — Rosso Corsa restraint, FerrariSans 500, and full-bleed cavallino photography. Figma Bright multi-color section bands with figmaSans display and figmaMono eyebrows — a marketing site that designs in scenes. Financial Times Salmon-pink page (`#fff1e5`) — the world''s most recognizable newspaper background, paired with Financier display + MetricWeb sans for global markets coverage. Fireworks AI Light canvas with Inter sans and a signature `#6720ff` purple-amber-orange spark — fast-inference platform dressed in speed-of-light kinetic chrome. Fly.io Mackinac display + Fragment Mono on a violet-saturated canvas — a PaaS that dresses like a small-press magazine. Ford American-truck heritage in corporate blue — Antenna sans, oval-script wordmark, and a deep `#003478` voltage that has carried the brand since 1927. Framer Black-on-white maximalism with electric gradient floods — Inter Display at heroic sizes, motion as a first-class material. Frontegg PP Neue Machina display + Neue Montreal body — plug-and-play user-management with deep-blue gravitas. Gemini (Google) Blue-into-violet gradient, Google Sans, soft Material 3 surfaces — Google''s house style applied to a chat interface. Ghost Warm-cream content CMS aesthetic — Inter for chrome, a soft serif for the writing surface, and a single confident green for action. GitHub Dark-canvas developer-platform marketing — Mona Sans variable headings, lime-green accent, near-black ground. GitHub Copilot Pure-white canvas, pure-black inverted CTAs, Mona Sans display — GitHub's editorial confidence applied to AI tooling. Grafana Dark observability canvas with the iconic `#f46800` orange — Inter for body, Roboto Mono everywhere a label hides, multi-colour chart palette ripped straight from a real dashboard. Granola White paper, a custom Quadrant book serif, and an olive-green CTA — an AI notepad that dresses like a stationery shop. Grubhub Friendly red-orange CTA, Sentinel display + Avenir body, dense delivery-app commerce — the long-running incumbent. HashiCorp Black canvas hosting a per-product color portfolio — Terraform purple, Vault yellow, Consul red, Waypoint cyan — multi-product identity made literal. Hashnode Developer publishing platform — deep navy canvas, electric blue brand, Inter sans + JetBrains Mono code chrome. HBO Max Deep purple-black premium streaming canvas with custom Sharp Grotesk and the unmistakable Max wordmark. Headspace Signature `#ffac1d` orange + custom round display + meditation-friendly playful warmth. Height AI-PM workspace dressed in chalk pastels — Inter at modest weights over a near-paper canvas, with a single confident accent and an AI-purple voltage moment. Honda Reliability-first restraint — HondaGlobalFont on white, signature red HP Cyan-blue `#0096d6` HP-circle on white with Forma DJR — the 84-year-old technology brand''s mainstream face. Hugging Face AI community canvas — deep blue-black ground, Source Sans Pro headlines, pill auth + 8px tile cards. Hulu Near-black canvas anchored on Hulu Green `#1ce783` with Graphik sans — the bright, cable-meets-streaming UI. IBM Carbon Design System made literal — pure-white canvas, IBM Plex Sans at light 300, square corners, and one assertive `#0f62fe` blue. Ideogram A bright white canvas with a single saturated violet cue — a typography-first AI image tool that lets the gallery do all the talking. Instacart Grocery-shopping-list practical — Instacart Sans on white, signature carrot green Kagi A premium search engine dressed in warm cream and Plex — the indie answer to ad-funded search. KAYAK Burnt-orange flight-search density — Open Sans on white, comparison-engine maximalism, price-graph data viz. Khan Academy Signature `#14bf96` mint green on white with Lato sans — free-for-everyone education in a warm, encouraging register. Kinde White canvas with Inter 72/500 display + dev-friendly pink-coral accent — the approachable auth-billing-access platform. Kit A cream newsletter canvas with a custom KitSans display, a Libre Franklin secondary, and a pastel-rainbow chip set — the editorial register reborn from ConvertKit. Kraken Kraken Purple `#7132f5` on white — Kraken-Brand display + Kraken-Product UI for a calmer, less-bombastic crypto exchange. Krea A pure-black studio with Suisse Intl set quietly at 60px — a creative-AI gallery that lets the work and the cobalt CTA carry the colour. Lamborghini Cathedral of darkness — true black canvas, Lamborghini Gold accents, and LamboType angled-terminal display. LangChain Deep navy canvas with Inter precision and a quietly confident teal accent — agent orchestration dressed as engineering documentation. Linear Dark-canvas product surface — pure-black ground, indigo accent, custom Inter weights, pill CTAs. LiveKit Realtime audio-video infra — Public Sans 300 weight on near-black, signature cyan LlamaIndex White canvas with Inter and a signature `#1b9aff` blue — RAG infrastructure dressed as a clean technical reference card. Logitech Soft consumer-tech blue gradients with Brown sans — design for the way you work, play, and create. Lovable Pink-into-violet gradient on white — vibe-coding dressed in playful, friendly chromatics. Magic Eden Mint-cream canvas, magenta-mint accent duet, and a custom Foundry display — Solana-native marketplace as boutique gallery. Mailchimp Cavendish-yellow chunkiness — a custom display serif (Cooper Light), the signature `#ffe01b` block, and a brand voice that hugs you while it ships campaigns. Mastercard Cream-canvas editorial fintech, circular-portrait orbits, MarkForMC at 450 weight — institutional-but-warm payments brand. MasterClass Pure-black cinema with custom display serif and editorial reverence — celebrity-instructor learning as a premium streaming product. Medium Editorial reading-first publishing — magazine-grade serif body, GT Super display, signature green-on-white pill CTAs. Mercedes-Benz Three-pointed-star authority — MBCorpo on near-black canvas, silver-blue Mercury A near-pure white canvas with a literary serif headline and a signature mercury-mint accent — banking dressed as a quiet magazine. Meta Optimistic blue (#0467df) on a white corporate canvas — Optimistic Display headlines, generous space, social-platform conglomerate at rest. Microsoft Fluent surfaces — off-white canvas, Segoe UI Variable Display, and a Cortana-blue action color carrying every product. Midjourney A deep cosmic canvas where JetBrains Mono headlines float over a wide-gamut OKLCH rainbow — a research lab dressed as a chapel. MiniMax Stark monochrome canvas broken open by vibrant gradient product cards — coral, magenta, blue, purple as model identity. Mintlify Documentation-platform marketing — pure white canvas, mint-green accent, Inter at tight tracking, near-black pill CTAs. Miro Canary-yellow Mistral Butter-yellow canvas, Arial as a deliberate anti-tech statement, and zero-radius rectangles — French AI as a brutalist art-school manifesto. Modal Serverless GPU infra in lime-green — `#0c0c0c` canvas, electric `#7fee64` accent, custom Modal Mono on every chip and code block. Monday.com Project management in confident red-pink — Poppins display at bold weights with a colorful saturated palette and a playfully energetic visual rhythm. MongoDB Signature MongoDB green Motion AI-calendar productivity in green-and-purple — Inter at modest weights with a green-to-purple voltage gradient signaling the AI scheduler, anchored by a clean white canvas. MSI Dragon-red `#ff0000` on jet black with bold display sans — the Taipei dragon-heritage gaming hardware brand. Mux Video API for developers — Aeonik on light-cream, Rotonto display, JetBrainsMono CTAs, sharp 0px corners. Neon Serverless Postgres dressed in late-night green — a near-black canvas with a single electric mint accent. Netflix Pure-black streaming theatre with signature `#e50914` red and Netflix Sans — the canonical media-tile grid. Nike Pure black, pure white, Helvetica Now — pill CTAs and full-bleed athletic photography on a single soft cloud gray. Notion Off-white canvas with Lyon serif accents and a custom NotionInter — a workspace dressed as a literary magazine. Nuxt Forest-green `#00dc82` glow on a near-black canvas — Vue-flavored warmth dressed for the cosmos. NVIDIA Engineering-grade canvas — pure black hero / paper-white body / one violently saturated `#76b900` green that carries every CTA and corner square. Omnivore Open-source read-it-later — near-white reading canvas, focused emerald-on-paper brand, archival elegance after the Eleven Labs sunset. OpenAI Pure white canvas, OpenAI Sans set in calm 500-weight, and a single black pill for the only action that matters — try ChatGPT. OpenRouter Pure-black canvas with custom display typography and pragmatic mono — LLM-router infrastructure dressed as a terminal billing dashboard. OpenSea Pure-black canvas, electric `#2081e2` blue, and Inter at trader-pro density — the original NFT marketplace as financial terminal. Optimism Pure-white canvas, signature `#ff0420` red voltage, and Inter at confident L2 register — Ethereum rollup as bold optimistic infrastructure. Ory White canvas with Inter 48/400 display + signature deep-navy `#0f172a` CTA — open-source-first identity for technical teams. Oura Pure-black canvas with Inter precision and gold-stamped scores — the premium-ring health-precision aesthetic. Paper Website A literal sheet-of-paper website — single literary serif, off-white sheet canvas, narrow reading columns, ink-blue links. PayPal Dual-blue corporate trust — PayPal Sans Big over white, with a deep-navy ink and a sky-blue counterpoint. Peloton Signature `#cb1e4e` red on midnight ink, Inter display, instructor-led premium-fitness storefront. Perplexity Cream paper canvas, custom pplxSans, and the unmistakable Tropic-cyan accent — a reference-library answer engine dressed in warm tones. Pinecone White canvas with Inter and a signature `#1cb0d0` cyan — vector database technical-marketing dressed in clean blueprint chrome. Plaid Pale blue trust on white, classical Stripe-adjacent type, and a Benjamin-Franklin-as-mascot moment of personality. Plain B2B support tool with a Dinamo grotesk and a single radioactive `#1ad379` action — Linear-restraint applied to support. PlanetScale Pure-black canvas, blood-red accent, mono-set numerals — a database brand styled like a financial terminal. Polar Dev-tool obsidian — 8rem editorial display headlines, indigo accents, Louize serif moments. Polygon Deep purple `#8247e5` voltage, soft surface ladder, and Inter at enterprise calm — Ethereum L2 as institutional infrastructure. Porsche Engineering-purity black-on-white — Porsche Next at 96px regular, Rosso PostHog Cream-canvas analytics with mustard-yellow CTAs and IBM Plex — open-source craft, not SaaS gloss. Postmark Postal-yellow #ffde00 + warm-black #1c1d1f + paper-white canvas — the transactional email API designed like a friendly post office sign. Prime Video Amazon-blue streaming canvas with Ember sans and the dense, utility-first marketplace UI vocabulary. PropelAuth White canvas with SF Pro Rounded display 60/900 + deep-navy ink — B2B multi-tenant auth with Apple-tinted polish. Qwik Electric purple-to-blue gradient on near-black — resumable execution dressed as a lightning bolt. Railway Ship software peacefully — IBM Plex Serif headlines on a deep eggplant canvas, with a single confident violet for action. Raindrop.io White paper, system-ui sans, soft watercolor blob backgrounds, and a vivid `#0b7ed0` blue CTA — a bookmark manager that ships like a creative-tool sketch. Ramp Off-yellow `#fcfb70` and black-on-white editorial — finance ops dressed as a printed annual report. Raycast Near-black canvas, glowing keycaps, monospaced shortcut chips — a marketing site that thinks like a launcher. Razer Neon `#44d62c` snake-green on jet black with Roboto — the For Gamers, By Gamers visual signature. Readwise Pastel-orange book-club warmth — soft cream canvas, friendly Tiempos serif accents, and a tangerine that signals 'this is your library.' Reddit Front-page-of-the-internet orange — community-card density, IBM Plex Sans display, and a confident Remix Signature `#3992ff` blue on pure white with Inter — a nested-routes web framework dressed as a manifesto poster. Render Lavender on white — a PaaS that swapped Heroku purple for a candy-bright #8a05ff and kept the airy whitespace. Replicate AI-API marketing — light page chrome, dark hero canvas, rb-Freigeist Neue display, JetBrains Mono code, sharp 0px corners. Replit Saturated turquoise on `#0e1525` ink — the cloud-IDE aesthetic with IBM Plex DNA and a JetBrains Mono soul. Retool Pragmatic blue #3a55fc + Inter + dense product mocks — the internal-tool platform that designed itself like a well-organised admin panel. Reuters Global newswire restraint — signature orange (`#ff8000`), Knowledge Medium custom sans, broadsheet rigor for the world''s oldest news agency. Riot Games Crimson `#d13639` red on near-black with custom Riot Beam display — esports-tournament drama and competitive-MOBA editorial. Rive Chunky animated display type and saturated playful colour — interactive graphics platform that wears its motion design on its sleeve. Roblox Bright `#ed1d24` red on white with Builder Sans — the youth-block-builder playground turned multi-billion-game social platform. RunPod Deep slate canvas with Inter and a signature `#673ab7` purple — accessible GPU cloud dressed in friendly developer chrome. Runway A near-black research canvas with ABC Normal headlines pulled tight at -2.5px — a film studio, an ML lab, and a brutalist gallery in one shell. Salesforce Cloud-trust dashboards — Salesforce Sans on a sky-blue ground, with Astro the bear standing guard over a dense CRM portal. SAP Enterprise-ERP precision in cobalt — SAP72 sans, signal-blue accents, and a calm white canvas built for trust. Segment Twilio Segment's customer-data-platform canvas — Whitney SSm humanist sans, navy-on-white, single confident `#1866ee` blue. Semafor Paper-cream canvas (`#f8f5d7`) with FeatureFlatHeadline serif and signature flag-style topic columns — global-news editorial built for the post-Twitter era. SendGrid Functional API-blue on white — the email-platform dashboard aesthetic, now folded under the Twilio umbrella. Sentry Deep-aubergine observability — Dammit Sans display, Rubik body, JetBrains Mono code, signature violet #7553ff and pill CTAs. shadcn/ui Copy-paste components in pure black-on-white — the most influential design system not actually shipped as a library. Shopify Dark-first commerce theatre — 96px NeueHaasGrotesk at weight 330, electric mint focus rings, and stacked multi-layer shadows. Signal Privacy-first messaging in `#3a76f0` Signal blue with Inter sans — minimal, ad-free, end-to-end-encrypted by default. Slack Aubergine workspace marketing — Salesforce-Avant-Garde headlines, all-caps 4px CTAs, white canvas with `#4a154b` accents. SolidJS Deep navy with a blue-to-cyan brand gradient — reactive primitives dressed as a circuit diagram. Sonos Pure black canvas, Inter typography, and audio-system minimalism — speakers presented as gallery objects. SoundCloud Signature `#ff5500` orange on `#f2f2f2` paper with Interstate sans — waveform-first audio social UI. SpaceX Pure-black cinematic photography, D-DIN aerospace stencil type, ghost-button minimalism — the interface disappears. Spotify Electric `#1ed760` green on near-black canvas with Spotify Mix sans — the canonical streaming-audio tile grid. Square Pure black on pure white, Square Sans grids, and retail-POS minimalism — commerce as black-and-white geometry. Starbucks Forest-green storefront — SoDoSans, full-pill buttons, warm-cream canvas, and a floating Frap CTA the brand calls home. Steam Deep blue-gray `#1b2838` with Motiva Sans — the utilitarian PC-gaming library that runs the world's largest digital storefront. SteelSeries Esports orange `#ff6900` on near-black with Inter — Danish precision peripherals for competitive play. Strava Signature `#fc4c02` orange + Inter on white — endurance-athlete data-driven storefront with map-overlay heritage. Stripe Editorial fintech polish — light Söhne headlines at weight 300, navy-not-black text, signature `#533afd` purple CTAs. Stytch Paper-cream canvas with Booton display + Chivo Mono body — passwordless-modern auth, joined Twilio. Substack Magazine-on-the-internet — Spectral serif body at 19px, Cahuenga display, signature `#ff6719` orange CTAs. Suno A near-black booth with cream Neue Montreal and a hot-pink cue light — a music studio, a record sleeve, and a chat app fused into one canvas. Sunsama Thoughtful daily planning in warm cream and ink — Inter at modest weights over a paper-cream canvas with sage and rose accents and a calm, unhurried voice. Supabase Off-black canvas, signature emerald `#3ecf8e`, Circular as display, Postgres-grade type discipline. Superhuman White paper canvas, a custom Super Sans variable, and a single confident lavender — premium email dressed as a stationery brand. Supreme Box-logo red, Courier monospace, skate-deadpan minimalism — the most influential streetwear store on the web. Svelte Hot orange #ff3e00 against clean white with a confident sans — the framework that wears its flame as a wordmark. Tailwind CSS The system applied to itself — Inter Variable on white canvas, signature cyan #06b6d4, every component built from Tailwind utilities. Tana Pure black canvas, a custom tanaClassic serif at 83px, and a pale-pistachio CTA — a knowledge graph dressed as a literary supplement. Target Bullseye red CTA, Helvetica Neue, photographic hero — friendly mass-market design with confident chromatic restraint. Telegram Cloud-blue messaging — Tesla Cinematic showroom on white — one Electric Blue CTA, Universal Sans, and viewport-height car photography. The Atlantic Modern serif headlines on cream-paper, signature Atlantic orange `#fbb33b`, long-form magazine reading rendered for the web. The Economist Deep cinnabar red `#e3120b`, Milo serif body, Econ Sans labels — the global-affairs weekly rendered with cover-illustration discipline. The Guardian Guardian Egyptian slab serif, signature navy `#052962`, structured ruled hierarchy with bold section accents. The New York Times Cheltenham serif headlines on paper-white, signature breaking-news red, the canonical American broadsheet rendered for the web. The New Yorker Adobe Caslon Pro + Irvin headline cap — a century of editorial gravitas in cream paper, ink black, and signature cartoon line. The Washington Post Postoni serif blackletter masthead, "Democracy Dies in Darkness" tagline, sober ink-on-paper political broadsheet. Things Cool light-blue canvas, system-ui sans, vivid Things-blue accent — a task manager that ships like an Apple Pro Display. Threads Instagram-adjacent text-first social — pure-black canvas, system-sans clarity, and a quiet brand restraint built from the @ glyph alone. TikTok Electric cyan-magenta on pure black — vertical-video voltage with custom Proxima Nova display and a bold neon brand grammar. tldraw Casual whiteboard sketchy — hand-drawn UI primitives, dotted-grid canvas, and a soft pastel palette that wears its toy-like energy with confidence. Together AI Deep navy on near-white with Inter sans — open-source LLM cloud rendered as developer-platform infrastructure. Toyota Japanese-reliability mainstream — `#eb0a1e` Toyota red on white, ToyotaType sans, and a calm-confident marketing surface for the world's most-sold automotive brand. Turbo Vercel-grade pure-black canvas with a magenta-to-blue Turbo gradient — the build system that wears its speed as a sweep. Turso SQLite at the edge — a deep-teal canvas with a CRT-bright cyan accent (#00face) that reads as a glowing edge node. Twilio Signal-red `#f22f46` against clean white — communications APIs given the visual weight of a broadcast colour. Twitch Purple `#9146ff` on `#0e0e10` canvas with Inter — the live-streaming UI built around chat, raids, and gaming density. Uber Eats Pure-black ground, Uber Move custom sans, Uber-app continuity — the operating system of food delivery. Udemy Signature `#a435f0` purple on white with Sailec sans — the open course-marketplace bazaar made approachable. Uniqlo Signature red `#ff0000`, Helvetica Neue system stack, japanese-utility-functional grid — the LifeWear engine. v0 A near-white prompt canvas with GeistSans and pure OKLCH grayscale — Vercel''s AI builder dressed as the calmest text editor on the internet. Venmo A single confident `#3d95ce` blue, Aktiv Grotesk geometry, and a social-feed informality — payments dressed as group chat. Vercel Brutalist developer-product polish — near-white canvas, near-pure black-on-near-white type, Geist sans + mono, conic-gradient accents. Vite Electric purple #646cff + Manrope display + a literal lightning-bolt mark — the build tool that designed itself to feel as fast as it is. Vodafone Vodafone Red broadcast band, monumental 144px display, two-tier button system — corporate-newsroom telecom design. Volkswagen People's-car blue — the deep `#001e50` corporate hue, custom VW Sans, and a friendly-German marketing surface that sells everyday mobility with confidence. Walmart Spark-yellow on big-box blue, Antonio Display + Bogle sans — everyday low prices made loud. Warp Near-black canvas, neon-lime cursor, real terminal screenshots — a marketing site that boots like a shell. Weaviate White canvas with Inter and a signature `#1cdb46` open-source green — modular vector database dressed in approachable engineering chrome. webdesignhot AI-era editorial dark — pure black with one acid-lime accent. Webflow Indigo-to-purple gradient discipline with a precise structural sans — the visual builder that markets itself like a design conference. WHOOP Lime `#a0d10b` voltage on jet-black, Inter precision, recovery-data athlete-grade aesthetic. WIRED Newsstand-density editorial grid, sharp-corner buttons, mono ALL-CAPS kickers — Conde Nast meets engineering lab. Wise A flexible bright-lime green on cream-white — money that travels in sans-serif and a single confident accent. Workday HR-warm professional in tangerine — Adelle Sans humanist curves, signature `#f37721` orange, and a calm white people-first canvas. WorkOS Pure-white canvas with Untitled Sans 80/500 display + indigo-violet h2 — the B2B-enterprise gravitas aesthetic. X Pure-black canvas with Chirp display — algorithmic minimalism, single-letter wordmark, ruthless type discipline. Y Combinator Brutalist orange monolith — system-font sans on white canvas, signature `#f26625` orange-red blocks with hard 0px corners. You.com Crisp white developer-doc canvas, custom Lumen Sans, and the indigo `#5368EE` accent — a search API rebrand done as enterprise infrastructure. YouTube YouTube Sans + Roboto + signature `#ff0000` red — content-density at planetary scale. Zora Cream-white canvas, electric purple-orange duet, and a custom display — onchain creator network as zine cover.
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Tokens design.md/v1.5
- bg
#000000 - bg-elevated
#141517 - bg-elevated-2
#191b1e - bg-elevated-3
#212629 - bg-elevated-4
#2a3035 - surface
#191b1e - surface-2
#212629 - surface-3
#2a3035 - text AAA · 18.4
#f0f0f0 - text-soft
#a1a4a5 - text-muted
#878d8f - text-faint AA·LG · 3.5
#5e6466 - text-disabled
#3f4546 - brand AAA · 18.4
#f0f0f0 - brand-warm
#fafafa - link-blue
#3b9eff - link-blue-hover
#5fb1ff - link-blue-soft
rgba(0,117,255,0.34) - link-blue-deep
#0075ff - accent-mint
#3ddc84 - accent-amber
#ffba08 - accent-coral
#ff5e5b - border — · 1.4
#212629 - border-soft
rgba(255,255,255,0.07) - border-strong — · 1.4
rgba(255,255,255,0.16) - shadow-card
rgba(0,0,0,0.40) - shadow-elev
rgba(0,0,0,0.60) - shadow-deep
rgba(0,0,0,0.80) - on-brand
#000000 - on-blue
#ffffff - semantic-success
#3ddc84 - semantic-warning
#ffba08 - semantic-danger
#ff5e5b - semantic-info
#3b9eff
Ship faster than ever.
display-hero "domaine" 144px w400 -0.015em
Ship faster than ever.
display-large "domaine" 120px w400 -0.012em
Ship faster than ever.
h1 "domaine" 96px w400 -0.01em
Built for teams that ship.
h2 "domaine" 64px w400 -0.01em
A complete kit
h3 "domaine" 40px w400 -0.005em
The quick brown fox jumps over the lazy dog.
h4 inter 24px w500 0
The quick brown fox jumps over the lazy dog.
body-large inter 18px w400 0
The quick brown fox jumps over the lazy dog.
body inter 16px w400 0
The quick brown fox jumps over the lazy dog.
button-large "aBCFavorit" 15px w500 0
The quick brown fox jumps over the lazy dog.
body-small inter 14px w400 0
The quick brown fox jumps over the lazy dog.
button "aBCFavorit" 14px w500 0
The quick brown fox jumps over the lazy dog.
nav-link "aBCFavorit" 14px w400 0
npx design-md add linear
code "commitMono" 14px w400 0
npx design-md add linear
code-bold "commitMono" 14px w500 0
OUR DESIGN SYSTEM
caption inter 13px w400 0
OUR DESIGN SYSTEM
label "aBCFavorit" 12px w500 0.04em
OUR DESIGN SYSTEM
label-mono "commitMono" 11px w500 0.04em
The quick brown fox jumps over the lazy dog.
micro "aBCFavorit" 11px w500 0.02em
- step-0 4px
- step-1 8px
- step-2 12px
- step-3 16px
- step-4 24px
- step-5 32px
- step-6 48px
- step-7 64px
- step-8 80px
- step-9 120px
- step-10 160px
- step-11 200px
- none
0px - micro
2px - xs
4px - sm
6px - md
8px - lg
12px - xl
16px - pill
9999px
Text link →
Card preview
A complete kit — everything your product needs.
Hero, pricing, FAQ, dashboard, docs — every layout your product needs.
New
Stable
v1.0
Resend's homepage is the rare developer-infrastructure site that chooses a **serif display face**. Where Linear, Vercel, Supabase and Stripe all reach for Inter or a custom geometric sans, Resend drops a 96–144px **Domaine Display** as its hero — Domaine is the Klim Type Foundry serif used by The New Yorker, *Bloomberg Businessweek*, and several literary publishers. Pairing it with a pure-`#000` canvas turns the marketing into something closer to an essay opener than an SDK pitch. Body copy hands off to `Inter` at 16px (the dev-tool default), and inline code uses **Commit Mono**, the open-source mono designed for terminal legibility — together those three faces stake out three distinct voices: editorial display, neutral body, and functional code. A fourth face, **ABC Favorit** (Lineto), carries the CTA / button voice at weight 500. The CTA uses ABC Favorit at 14px on a faint-blue wash (`rgba(0,117,255,0.34)`) at full pill radius — that pill-shaped chip is conspicuously small (8/16px padding), which keeps the editorial typography in command of the composition. Where Stripe trusts a single saturated brand colour, Resend trusts neutral grays plus type — there's no signature hue, only a signature serif. The radius ladder runs 2/4/6/8/12/16 with a full-pill (9999) reserved for the primary CTA chip. The surface ladder is three near-imperceptible gray stops (`#141517 → #191b1e → #212629`) — each just 4–6 lightness units apart — that let cards differentiate without breaking the editorial register.
- The literary-magazine display serif at 96–144px gives Resend its essay-not-SDK feel
- Editorial publishing's serif-on-black grammar, repurposed for developer infrastructure
- Open-source terminal-grade mono used for inline code chips and API examples
- Contemporary geometric sans used for CTA / button voice — third typographic register
- Body voice — the dev-tool default for long-form documentation legibility
Export
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---
name: Resend
tagline: Pure-black canvas with Domaine Display serif at 96px and Commit Mono code chips — email infra that thinks in italics.
author: webdesignhot
source_url: https://resend.com
spec: design.md/v1.5
quality: curated
featured: false
categories: [dev-tools, saas]
tags: [dark, editorial, serif, sans, mono, spacious]
preview_swatch: ['#000000', '#f0f0f0', '#3b9eff']
related: [linear, supabase, vercel]
description: 'Resend pairs a pure-`#000` canvas with **Domaine Display** for headlines and **Commit Mono** for code, then quietly hands the body to Inter and the buttons to ABC Favorit. The result is dev-tool infrastructure dressed in a magazine — uncommon for the category, and the reason its API docs feel like an essay.'
colors:
bg: '#000000' # observed body bg, also --color-background — pure black, no calibration
bg-elevated: '#141517' # --color-gray-1 — first surface stop
bg-elevated-2: '#191b1e' # --color-gray-2 — card panels
bg-elevated-3: '#212629' # --color-gray-3 — input fields, code blocks
bg-elevated-4: '#2a3035' # --color-gray-4 — popover hover
surface: '#191b1e' # primary card surface (alias of bg-elevated-2)
surface-2: '#212629' # code blocks, input fields
surface-3: '#2a3035' # nested elevated
text: '#f0f0f0' # --color-gray-12 — observed body color rgb(240,240,240)
text-soft: '#a1a4a5' # --color-gray-11
text-muted: '#878d8f' # --color-gray-10
text-faint: '#5e6466' # --color-gray-9
text-disabled: '#3f4546' # --color-gray-7
brand: '#f0f0f0' # the brand voice is the type itself; primary accent stays neutral
brand-warm: '#fafafa' # warmer brand for emphasis
link-blue: '#3b9eff' # --color-blue-10 (used for inline links in copy)
link-blue-hover: '#5fb1ff' # lighter blue on hover
link-blue-soft: 'rgba(0,117,255,0.34)' # --color-blue-4 — CTA wash
link-blue-deep: '#0075ff' # full saturated blue
accent-mint: '#3ddc84' # --color-green-10 — success / API key indicator
accent-amber: '#ffba08' # --color-amber-10 — warning
accent-coral: '#ff5e5b' # --color-red-10 — danger / error
border: '#212629' # --color-gray-3 used as hairline
border-soft: 'rgba(255,255,255,0.07)' # observed faint divider
border-strong: 'rgba(255,255,255,0.16)' # hover/focus
shadow-card: 'rgba(0,0,0,0.40)' # subtle, rare
shadow-elev: 'rgba(0,0,0,0.60)'
shadow-deep: 'rgba(0,0,0,0.80)'
on-brand: '#000000' # ink on neutral text-as-brand
on-blue: '#ffffff' # ink on saturated blue
semantic-success: '#3ddc84'
semantic-warning: '#ffba08'
semantic-danger: '#ff5e5b'
semantic-info: '#3b9eff'
typography:
display:
family: '"domaine", "Domaine Display", ui-serif, Georgia, Cambria, "Times New Roman", Times, serif'
weights: [400] # observed at 400 only — Domaine carries presence at regular
opentype: ['kern', 'liga', 'dlig']
body:
family: 'inter, ui-sans-serif, system-ui, sans-serif'
weights: [400, 500, 600]
opentype: ['kern', 'liga', 'calt']
ui:
family: '"aBCFavorit", "ABC Favorit", ui-sans-serif, system-ui, sans-serif'
weights: [400, 500] # CTA / button voice observed at 500
opentype: ['kern', 'liga']
mono:
family: '"commitMono", "Commit Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace'
weights: [400, 500]
opentype: ['kern', 'tnum', 'zero']
scale:
display-hero: { size: 144, weight: 400, lineHeight: 0.95, tracking: '-0.015em', family: display, opentype: 'kern, liga, dlig' }
display-large: { size: 120, weight: 400, lineHeight: 0.98, tracking: '-0.012em', family: display, opentype: 'kern, liga, dlig' }
h1: { size: 96, weight: 400, lineHeight: 1.0, tracking: '-0.01em', family: display, opentype: 'kern, liga, dlig' }
h2: { size: 64, weight: 400, lineHeight: 1.05, tracking: '-0.01em', family: display, opentype: 'kern, liga' }
h3: { size: 40, weight: 400, lineHeight: 1.15, tracking: '-0.005em', family: display, opentype: 'kern, liga' }
h4: { size: 24, weight: 500, lineHeight: 1.30, tracking: '0', family: body }
body-large: { size: 18, weight: 400, lineHeight: 1.6, tracking: '0', family: body, opentype: 'kern, liga' }
body: { size: 16, weight: 400, lineHeight: 1.5, tracking: '0', family: body, opentype: 'kern, liga' }
body-small: { size: 14, weight: 400, lineHeight: 1.5, tracking: '0', family: body, opentype: 'kern, liga' }
button: { size: 14, weight: 500, lineHeight: 1.0, tracking: '0', family: ui }
button-large: { size: 15, weight: 500, lineHeight: 1.0, tracking: '0', family: ui }
nav-link: { size: 14, weight: 400, lineHeight: 1.40, tracking: '0', family: ui }
label: { size: 12, weight: 500, lineHeight: 1.30, tracking: '0.04em', family: ui, transform: 'uppercase' }
label-mono: { size: 11, weight: 500, lineHeight: 1.30, tracking: '0.04em', family: mono, transform: 'uppercase' }
caption: { size: 13, weight: 400, lineHeight: 1.4, tracking: '0', family: body }
micro: { size: 11, weight: 500, lineHeight: 1.3, tracking: '0.02em', family: ui }
code: { size: 14, weight: 400, lineHeight: 1.6, tracking: '0', family: mono, opentype: 'tnum, zero' }
code-bold: { size: 14, weight: 500, lineHeight: 1.6, tracking: '0', family: mono }
radius:
none: 0
micro: 2 # --radius-xs 0.125rem
xs: 4 # --radius-sm 0.25rem
sm: 6 # --radius-md 0.375rem
md: 8 # --radius-lg 0.5rem
lg: 12 # --radius-xl 0.75rem
xl: 16 # --radius-2xl 1rem
pill: 9999 # observed CTA radius is effectively pill (1.67e7px)
spacing:
base: 4
xxs: 2
xs: 4
sm: 8
md: 12
lg: 16
xl: 24
xxl: 32
section-sm: 80
section: 120
section-lg: 200
scale: [4, 8, 12, 16, 24, 32, 48, 64, 80, 120, 160, 200]
layout:
page-width: 1280
prose-width: 680
header-height: 64
hero-height: 800
grid-gap: 24
motion:
ease-standard: 'cubic-bezier(0.4, 0, 0.2, 1)'
ease-emphasized: 'cubic-bezier(0.2, 0, 0, 1)'
ease-entrance: 'cubic-bezier(0, 0, 0.2, 1)'
duration-fast: 100
duration-standard: 200
duration-slow: 320
duration-fade: 600
reduced-motion: 'respects prefers-reduced-motion: reduce — all transforms collapse to opacity'
breakpoints:
mobile: 640
tablet: 1024
desktop: 1280
wide: 1536
shadows:
ambient: 'rgba(0,0,0,0.40) 0 1px 2px'
standard: 'rgba(0,0,0,0.50) 0 4px 12px'
elevated: 'rgba(0,0,0,0.60) 0 12px 32px'
deep: 'rgba(0,0,0,0.80) 0 24px 48px'
ring: '0 0 0 2px #3b9eff'
blue-glow: '0 0 0 4px rgba(59,158,255,0.20)'
accessibility:
contrast-text-on-bg: 18.7 # #f0f0f0 on #000000 — AAA
contrast-soft-on-bg: 9.6 # #a1a4a5 on #000000 — AAA
contrast-muted-on-bg: 6.4 # #878d8f on #000000 — AA at body, AAA at large
contrast-link-on-bg: 7.4 # #3b9eff on #000000 — AAA at body
focus-ring: '2px solid #3b9eff with 2px offset on pure-black canvas'
reduced-motion-honored: true
keyboard-nav: 'tab order follows visual; skip-link present; copy-code buttons keyboard-accessible'
components:
button-primary:
background: 'rgba(0,117,255,0.34)'
text: '#ffffff'
radius: 9999
padding: '8px 16px'
height: 36
font: button
border: '1px solid rgba(59,158,255,0.40)'
hover: 'background rgba(0,117,255,0.50); border rgba(59,158,255,0.60)'
use: 'primary CTA — Get Started, soft-blue translucent pill, deliberately small to keep eye on Domaine'
button-secondary:
background: '#191b1e'
text: '#f0f0f0'
radius: 9999
padding: '8px 16px'
height: 36
font: button
border: '1px solid #212629'
hover: 'background #212629; border rgba(255,255,255,0.16)'
use: 'secondary CTA — Talk to Sales / Read Docs'
button-ghost:
background: 'transparent'
text: '#f0f0f0'
radius: 9999
padding: '6px 12px'
font: button
hover: 'background rgba(255,255,255,0.05)'
use: 'tertiary text-link CTA / nav button'
card-feature:
background: '#141517'
text: '#f0f0f0'
border: '1px solid rgba(255,255,255,0.07)'
radius: 12
padding: '32px'
use: 'feature card — gray-1 over canvas, subtle border'
card-elevated:
background: '#191b1e'
text: '#f0f0f0'
border: '1px solid rgba(255,255,255,0.07)'
radius: 12
padding: '40px'
use: 'elevated panel — gray-2, second tier'
card-pricing:
background: '#141517'
text: '#f0f0f0'
border: '1px solid rgba(255,255,255,0.07)'
radius: 16
padding: '40px'
use: 'pricing tier card — slightly larger radius'
card-pricing-featured:
background: '#191b1e'
text: '#f0f0f0'
border: '1px solid #3b9eff'
radius: 16
padding: '40px'
use: 'featured pricing tier — blue accent border'
code-block:
background: '#212629'
text: '#f0f0f0'
border: '1px solid rgba(255,255,255,0.07)'
radius: 8
padding: '20px 24px'
font: code
use: 'multi-line API code sample — Commit Mono, slate gray-3 background'
code-chip:
background: '#191b1e'
text: '#f0f0f0'
border: '1px solid rgba(255,255,255,0.07)'
radius: 6
padding: '4px 8px'
font: code
use: 'inline code chip — npm install resend, API endpoint reference'
input:
background: '#212629'
text: '#f0f0f0'
border: '1px solid rgba(255,255,255,0.16)'
radius: 8
padding: '10px 14px'
height: 40
font: body
focus: 'border #3b9eff; ring 0 0 0 2px rgba(59,158,255,0.20)'
use: 'email / form input'
badge-pill:
background: '#191b1e'
text: '#a1a4a5'
border: '1px solid rgba(255,255,255,0.07)'
radius: 9999
padding: '4px 12px'
font: micro
use: 'NEW / category badge — neutral on dark'
badge-blue-soft:
background: 'rgba(0,117,255,0.20)'
text: '#5fb1ff'
radius: 9999
padding: '4px 12px'
font: micro
use: 'feature badge — soft blue, sparingly used'
nav-link:
background: 'transparent'
text: '#a1a4a5'
font: nav-link
padding: '6px 12px'
hover: 'text #f0f0f0'
use: 'top nav menu — Product / Docs / Pricing / Company'
dark-mode: optional
lineage:
summary: |
Resend's homepage is the rare developer-infrastructure site that
chooses a **serif display face**. Where Linear, Vercel, Supabase
and Stripe all reach for Inter or a custom geometric sans, Resend
drops a 96–144px **Domaine Display** as its hero — Domaine is the
Klim Type Foundry serif used by The New Yorker, *Bloomberg
Businessweek*, and several literary publishers. Pairing it with
a pure-`#000` canvas turns the marketing into something closer
to an essay opener than an SDK pitch. Body copy hands off to
`Inter` at 16px (the dev-tool default), and inline code uses
**Commit Mono**, the open-source mono designed for terminal
legibility — together those three faces stake out three distinct
voices: editorial display, neutral body, and functional code. A
fourth face, **ABC Favorit** (Lineto), carries the CTA / button
voice at weight 500. The CTA uses ABC Favorit at 14px on a
faint-blue wash (`rgba(0,117,255,0.34)`) at full pill radius —
that pill-shaped chip is conspicuously small (8/16px padding),
which keeps the editorial typography in command of the
composition. Where Stripe trusts a single saturated brand colour,
Resend trusts neutral grays plus type — there's no signature hue,
only a signature serif. The radius ladder runs 2/4/6/8/12/16 with
a full-pill (9999) reserved for the primary CTA chip. The surface
ladder is three near-imperceptible gray stops (`#141517 → #191b1e
→ #212629`) — each just 4–6 lightness units apart — that let
cards differentiate without breaking the editorial register.
influences:
- name: 'Klim Type Foundry / Domaine Display'
role: 'The literary-magazine display serif at 96–144px gives Resend its essay-not-SDK feel'
url: 'https://klim.co.nz'
- name: 'The New Yorker / Bloomberg Businessweek'
role: 'Editorial publishing''s serif-on-black grammar, repurposed for developer infrastructure'
url: 'https://www.newyorker.com'
- name: 'Commit Mono'
role: 'Open-source terminal-grade mono used for inline code chips and API examples'
url: 'https://commitmono.com'
- name: 'Lineto / ABC Favorit'
role: 'Contemporary geometric sans used for CTA / button voice — third typographic register'
url: 'https://lineto.com/typefaces/favorit'
- name: 'Inter'
role: 'Body voice — the dev-tool default for long-form documentation legibility'
url: 'https://rsms.me/inter/'
---
## 1. Visual Theme & Atmosphere
Resend's marketing site lives at pure `#000` and lets a 96–144px **Domaine Display** serif do the heavy lifting. The hero "Email for / developers" arrives at weight 400 with `-0.96px` tracking — Domaine's organic counters and pronounced ball terminals turn the line into a magazine opener, not a typical SaaS hero. The body voice is `Inter` at 16px; inline code drops to `Commit Mono`; the CTA uses `ABC Favorit`. The visual register is *Bloomberg Businessweek* wearing developer-tool clothing.
Where peer dev-infra sites (Vercel, Supabase, Linear) commit to geometric sans systems, Resend's serif-led identity is what carries the brand: there's no signature accent colour, no chromatic gimmick. The canvas is `#000`, the type is editorial, and the link blue (`#3b9eff`) is borrowed from Radix UI's blue-10 — neutral enough not to compete with the typography. The brand's primary signal is **the serif itself**, deliberately the only ornament on the page.
Below the hero, sections breathe with editorial pacing — 120–200px of vertical space between sections, generous prose widths (680px), and a deliberate avoidance of multi-column information density. The page reads top-to-bottom like a long-form essay rather than a feature-grid landing. Each section carries a single h2 in Domaine, a body paragraph or two in Inter, and a code sample in Commit Mono. Cards are sparse; product screenshots appear inline rather than crowding the layout.
The signature design move is the **small pill CTA**. The primary action ("Get Started" or "Sign Up") renders as a tiny rounded pill in a faint-blue wash (`rgba(0,117,255,0.34)`), only 36px tall with 8/16 padding — conspicuously small relative to the 96–144px Domaine display above it. The size discipline keeps the editorial typography in command of the composition. Where Stripe makes the CTA the visual hero, Resend treats it as a footnote.
The surface ladder is three near-imperceptible gray stops (`#141517 → #191b1e → #212629`) — each just 4–6 lightness units apart. The differences read on a calibrated monitor; on most screens the three look nearly identical. That subtlety is intentional: Resend doesn't want elevation to compete with type. Cards lift through hairline borders (`rgba(255,255,255,0.07)` — a faint glow rather than a solid line) rather than shadow-and-elevation drama.
**Key Characteristics:**
- Pure `#000` canvas — no off-black calibration, the serif needs maximum contrast.
- Domaine Display serif at 96–144px, weight 400 only — editorial register, not bold.
- Three distinct type voices: Domaine (display), Inter (body), Commit Mono (code), ABC Favorit (CTA).
- Small pill CTA — 36px tall in faint-blue wash, deliberately understated.
- Three-step gray ladder (`#141517 / #191b1e / #212629`) — 4–6 lightness units apart.
- Hairline borders (`rgba(255,255,255,0.07)`) — faint glow, not solid line.
- Editorial pacing — 120–200px section gaps, 680px prose width.
- No signature hue — neutral grays plus serif is the entire visual identity.
- Blue accent (`#3b9eff`) only for inline links and CTA wash — never as fill.
- Centered hero composition — like a magazine cover.
## 2. Color Palette & Roles
### Primary
- **Background** (`#000000`): pure black canvas, no off-black calibration. The serif needs maximum contrast curves designed for high-contrast print.
- **Text** (`#f0f0f0`): primary copy — slightly off-white to soften against pure black. Mapped to `--color-gray-12`.
- **Brand** (`#f0f0f0`): the brand voice is the type itself — primary "accent" stays neutral. There's no signature hue.
### Brand & Dark
Three near-imperceptible gray stops form the surface ladder:
- **bg-elevated** (`#141517`): `--color-gray-1` — first surface stop.
- **bg-elevated-2 / surface** (`#191b1e`): `--color-gray-2` — card panels, primary card surface.
- **bg-elevated-3 / surface-2** (`#212629`): `--color-gray-3` — code blocks, input fields.
- **bg-elevated-4 / surface-3** (`#2a3035`): `--color-gray-4` — popover hover, deepest elevated.
### Accent
The single chromatic accent — used very sparingly, never as a fill on chrome:
- **Link Blue** (`#3b9eff`): `--color-blue-10` — inline links in copy, focus rings.
- **Link Blue Hover** (`#5fb1ff`): lighter blue.
- **Link Blue Soft** (`rgba(0,117,255,0.34)`): `--color-blue-4` — the CTA wash. The primary chromatic event on the page.
- **Link Blue Deep** (`#0075ff`): full saturated blue, rare.
Semantic accents (used inside docs and product screenshots, rare on marketing):
- **Mint** (`#3ddc84`): success / API key indicator.
- **Amber** (`#ffba08`): warning.
- **Coral** (`#ff5e5b`): danger / error.
### Interactive
- **CTA Background** (`rgba(0,117,255,0.34)`): the soft-blue wash on primary CTA.
- **CTA Text** (`#ffffff`): white on soft-blue.
- **Link** (`#3b9eff`): inline link in copy.
- **Focus Ring** (`2px solid #3b9eff`): blue ring with 2px offset on canvas.
### Neutral Scale
The Radix gray ramp (truncated to the values Resend uses):
- **Text** (`#f0f0f0`): primary copy, `--color-gray-12`.
- **Text Soft** (`#a1a4a5`): secondary copy, `--color-gray-11`.
- **Text Muted** (`#878d8f`): captions, metadata, `--color-gray-10`.
- **Text Faint** (`#5e6466`): disabled, `--color-gray-9`.
- **Text Disabled** (`#3f4546`): faintest, `--color-gray-7`.
### Surface & Borders
- **Surface** (`#191b1e`): primary card surface (alias of bg-elevated-2).
- **Surface 2** (`#212629`): code blocks, input fields.
- **Surface 3** (`#2a3035`): nested elevated.
- **Border** (`#212629`): hairline divider — same as surface-2, used as outline.
- **Border Soft** (`rgba(255,255,255,0.07)`): the **faint glow** border — not a solid line, more like a subtle backlight.
- **Border Strong** (`rgba(255,255,255,0.16)`): hover/focus outline.
### Shadow Colors
- **Ambient** (`rgba(0,0,0,0.40) 0 1px 2px`): rare faint lift.
- **Standard** (`rgba(0,0,0,0.50) 0 4px 12px`): hover elevation.
- **Elevated** (`rgba(0,0,0,0.60) 0 12px 32px`): modal.
- **Deep** (`rgba(0,0,0,0.80) 0 24px 48px`): rare backdrop.
Resend uses shadows sparingly — most depth comes from the surface ladder and faint-glow borders. Shadows would add visual weight that competes with the editorial typography.
### Semantic
- **Success** (`#3ddc84`): mint.
- **Warning** (`#ffba08`): amber.
- **Danger** (`#ff5e5b`): coral.
- **Info** (`#3b9eff`): blue.
## 3. Typography Rules
### Font Family
Four distinct type voices — the most stratified type system in the dev-tool category:
- **Display:** `"domaine", "Domaine Display", ui-serif, Georgia, Cambria, "Times New Roman", Times, serif`. Klim Type Foundry's literary book serif. **Weight 400 only** — Domaine carries enough presence at regular that bolder weights would feel heavy.
- **Body:** `inter, ui-sans-serif, system-ui, sans-serif`. The dev-tool default — Inter at 400/500/600 for long-form documentation legibility.
- **UI / CTA:** `"aBCFavorit", "ABC Favorit", ui-sans-serif, system-ui, sans-serif`. Lineto's contemporary geometric sans at 400/500. Used for buttons, nav, labels — a deliberate third register, neither serif (Domaine's drama) nor body (Inter's neutrality).
- **Mono:** `"commitMono", "Commit Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace`. Open-source terminal-grade mono with intentionally over-equalised stem widths.
### OpenType Features
- **Domaine:** `kern, liga, dlig` — kerning, standard ligatures, and discretionary ligatures (Domaine's `ct`, `st` ligatures appear at display sizes).
- **Inter:** `kern, liga, calt` — standard.
- **ABC Favorit:** `kern, liga`.
- **Commit Mono:** `kern, tnum, zero` — tabular figures and slashed zero for code legibility.
### Hierarchy
| Role | Font | Size | Weight | Line Height | Letter Spacing | OT Features | Notes |
|---|---|---|---|---|---|---|---|
| display-hero | Domaine | 144 | 400 | 0.95 | -0.015em | kern, liga, dlig | Largest hero (rare) |
| display-large | Domaine | 120 | 400 | 0.98 | -0.012em | kern, liga, dlig | Section hero |
| h1 | Domaine | 96 | 400 | 1.0 | -0.01em | kern, liga, dlig | Page H1 — "Email for / developers" |
| h2 | Domaine | 64 | 400 | 1.05 | -0.01em | kern, liga | Section heads |
| h3 | Domaine | 40 | 400 | 1.15 | -0.005em | kern, liga | Sub-section heads |
| h4 | Inter | 24 | 500 | 1.30 | 0 | kern, liga | Card titles — Inter, not Domaine (only at h1–h3) |
| body-large | Inter | 18 | 400 | 1.6 | 0 | kern, liga | Hero deck |
| body | Inter | 16 | 400 | 1.5 | 0 | kern, liga | Default body |
| body-small | Inter | 14 | 400 | 1.5 | 0 | kern, liga | Footer body |
| button | ABC Favorit | 14 | 500 | 1.0 | 0 | kern | CTA label |
| button-large | ABC Favorit | 15 | 500 | 1.0 | 0 | kern | Hero CTA |
| nav-link | ABC Favorit | 14 | 400 | 1.40 | 0 | kern | Top nav |
| label | ABC Favorit | 12 | 500 | 1.30 | 0.04em | kern, uppercase | UPPERCASE eyebrow |
| label-mono | Commit Mono | 11 | 500 | 1.30 | 0.04em | tnum, uppercase | Mono UPPERCASE category |
| caption | Inter | 13 | 400 | 1.4 | 0 | kern | Caption |
| micro | ABC Favorit | 11 | 500 | 1.3 | 0.02em | kern | Pill / badge text |
| code | Commit Mono | 14 | 400 | 1.6 | 0 | tnum, zero | Inline code chip |
| code-bold | Commit Mono | 14 | 500 | 1.6 | 0 | tnum, zero | Code emphasis |
### Principles
- **Domaine at 400 only.** Resend never weights Domaine at 600+ for headlines. The regular cut is what gives the type its bookish authority — heavier weights would tip the page toward marketing impact.
- **Reserve Domaine for hero + h1–h3.** Below h3 (40px), Domaine loses its presence and the body voice (Inter) takes over. h4 onward is Inter.
- **Three voices, three jobs.** Display = Domaine (drama). Body = Inter (neutrality). UI/CTA = ABC Favorit (functionality). Mono = Commit Mono (code). Each face has a distinct role; mixing them is forbidden.
- **Discretionary ligatures.** Domaine's `ct`, `st`, `ft` ligatures are enabled at display tier — they're the brand's editorial fingerprint. At body sizes they'd be precious.
- **Pure `#000` for serif contrast.** Off-black backgrounds dull Domaine's serifs. The pure black is part of the type's design — it was made for high-contrast print.
- **No serif emphasis.** Italics are rare. Domaine carries every drama-tier voice without italic.
- **Slashed zero in mono.** Commit Mono's `zero` feature distinguishes 0 from O in API examples — important for keys and IDs.
- **CTA stays small.** The button is rendered in ABC Favorit at 14px, height 36px — conspicuously small to keep eye on Domaine.
## 4. Component Stylings
### Buttons
**Primary (Soft-Blue Pill)**
- Background: `rgba(0,117,255,0.34)` — `--color-blue-4` translucent
- Text: `#ffffff`
- Padding: `8px 16px`, height 36
- Radius: 9999 (full pill)
- Border: `1px solid rgba(59,158,255,0.40)` — subtle blue trim
- Font: button (ABC Favorit 14 / 500)
- Hover: background `rgba(0,117,255,0.50)` + border opacity rises
- Use: hero CTA — Get Started, Sign Up. The only chromatic chrome on the page.
**Secondary (Dark-Surface Pill)**
- Background: `#191b1e`
- Text: `#f0f0f0`
- Padding: `8px 16px`, height 36
- Radius: 9999
- Border: `1px solid #212629`
- Hover: background `#212629` + border `rgba(255,255,255,0.16)`
- Use: Talk to Sales / Read Docs — neutral pair to primary.
**Ghost (Tertiary)**
- Background: transparent
- Text: `#f0f0f0`
- Padding: `6px 12px`
- Radius: 9999
- Hover: `rgba(255,255,255,0.05)` background
- Use: nav button, inline ghost.
### Cards
**Feature Card**
- Background: `#141517` (gray-1)
- Border: `1px solid rgba(255,255,255,0.07)` — faint glow
- Radius: 12
- Padding: 32
- Use: feature card on canvas — first elevation tier.
**Elevated Panel**
- Background: `#191b1e` (gray-2)
- Border: `1px solid rgba(255,255,255,0.07)`
- Radius: 12
- Padding: 40
- Use: second-tier elevated, e.g., highlighted feature.
**Pricing Card**
- Background: `#141517`
- Border: `1px solid rgba(255,255,255,0.07)`
- Radius: 16 (slightly larger)
- Padding: 40
- Use: pricing tier card.
**Pricing Card (Featured)**
- Background: `#191b1e` (one tier up)
- Border: `1px solid #3b9eff` — full blue accent border (rare chromatic moment)
- Radius: 16
- Padding: 40
- Use: featured pricing tier — the rare full-saturation blue moment.
### Code
**Code Block (Multi-Line)**
- Background: `#212629` (gray-3)
- Text: `#f0f0f0`
- Border: `1px solid rgba(255,255,255,0.07)`
- Radius: 8
- Padding: `20px 24px`
- Font: code (Commit Mono 14 / 400)
- Use: API code samples, `resend.emails.send(...)` snippets.
**Code Chip (Inline)**
- Background: `#191b1e` (gray-2)
- Text: `#f0f0f0`
- Border: `1px solid rgba(255,255,255,0.07)`
- Radius: 6
- Padding: `4px 8px`
- Font: code
- Use: inline `npm install resend`, API endpoint reference.
### Inputs / Forms
**Input**
- Background: `#212629`
- Border: `1px solid rgba(255,255,255,0.16)`
- Radius: 8
- Padding: `10px 14px`, height 40
- Focus: border `#3b9eff` + ring `0 0 0 2px rgba(59,158,255,0.20)`
- Use: email signup, contact form.
### Badges
**Neutral Pill**
- Background: `#191b1e`
- Text: `#a1a4a5`
- Border: `1px solid rgba(255,255,255,0.07)`
- Radius: 9999, Padding: `4px 12px`
- Font: micro (11/500 ABC Favorit)
- Use: NEW / category badges.
**Soft-Blue Pill**
- Background: `rgba(0,117,255,0.20)`
- Text: `#5fb1ff`
- Radius: 9999
- Use: feature badges where blue is earned.
### Navigation
Top nav 64px tall, `#000000` background (matches canvas) with no border on hero, `1px solid rgba(255,255,255,0.07)` border-bottom on scroll. Links: ABC Favorit 14/400 `#a1a4a5`, hover to `#f0f0f0`. Right side: Sign In (ghost) + Get Started (soft-blue pill primary).
## 5. Layout Principles
### Spacing System
Base 4px. Scale: 4 / 8 / 12 / 16 / 24 / 32 / 48 / 64 / 80 / 120 / 160 / 200. Section gaps run **120–200px** (significantly more lavish than dev-tool peers); inside-card padding 32–40; nav padding `6px 12px`; grid gap 24.
The density is **editorial** — not the dense feature grids of Linear/Vercel, not the lavish breathing room of Apple. Resend's pacing matches a literary magazine's column: top-to-bottom rhythm, generous between-section air, prose-width centered.
### Grid & Container
- **Page width:** 1280px max.
- **Prose width:** 680px (intro paragraphs and long-form copy).
- **Header height:** 64px.
- **Hero height:** ~800px (taller than peer dev-tool sites).
- **Grid gap:** 24px between feature cards.
The page is **center-justified, top-to-bottom**. Multi-column layouts are rare; when they appear (pricing, comparison tables), they break out of the prose-width and use the full 1280px container.
### Whitespace Philosophy
Resend's whitespace is **literary, not lavish**. Sections breathe at 120–200px gaps — twice what Linear or Vercel use, half what Apple uses. The pacing rewards careful reading and gives Domaine room to land. Each h2 sits in its own visual paragraph, with 80–120px above and 32–48px below.
### Section Cadence
Pure black canvas runs edge-to-edge. Section breaks come from typography, not background shifts:
1. Hero (centered, ~800px tall) — Domaine 96–144px headline + small CTA.
2. Feature stack (alternating: text-left + code-right, then text-right + code-left).
3. Customer logo cloud (compact, faint).
4. Code-sample showcase (full-width code block in surface-2).
5. Pricing (3-col card grid).
6. FAQ (single-column accordion).
7. Footer.
The dark-canvas-throughout discipline is the brand's editorial signature — Resend doesn't break into light bands.
## 6. Shapes & Radius Scale
| Tier | Value | Use |
|---|---|---|
| None | 0 | Edge-bound (rare) |
| Micro | 2 | Decorative pills |
| XS | 4 | Tag chips |
| **SM** | **6** | **Code chips, small inputs** |
| MD | 8 | Code blocks, inputs |
| LG | 12 | Cards |
| XL | 16 | Pricing cards |
| **Pill** | **9999** | **Primary CTA — full pill, deliberately small** |
Resend's radius scale is short and disciplined. The full-pill (9999) is reserved for the small primary CTA and avatar elements — its compactness keeps the eye on Domaine. Cards land at 12 (lg); pricing at 16 (xl); code blocks and inputs at 8 (md).
**No compound radii.** Each component has consistent corners.
## 7. Depth & Elevation
| Level | Treatment | Use |
|---|---|---|
| 0 | Flat — no shadow | Body copy on canvas |
| 1 | Tonal `#141517` over `#000` + faint-glow border | Feature cards |
| 2 | Tonal `#191b1e` + faint-glow border | Elevated panels |
| 3 | Tonal `#212629` + faint-glow border | Code blocks, inputs |
| 4 | `0 12px 32px rgba(0,0,0,0.60)` | Modal (rare) |
| 5 | `0 24px 48px rgba(0,0,0,0.80)` | Modal backdrop (rare) |
### Shadow Philosophy
Resend uses **tonal layering plus faint-glow borders** — almost no shadows. The three near-imperceptible gray stops (`#141517 → #191b1e → #212629`) are each just 4–6 lightness units apart; the differences are subtle on most screens. The faint-glow border (`rgba(255,255,255,0.07)`) reads as a soft backlight rather than a solid line, giving cards a floating quality without the weight of shadow.
The discipline is: **shadows would compete with Domaine's serif**, so they're avoided. The editorial typography is the figure; the gray ladder is just the ground.
## 8. Interaction & Motion ✨
### Easing Curves
- **Standard:** `cubic-bezier(0.4, 0, 0.2, 1)` — default.
- **Emphasized:** `cubic-bezier(0.2, 0, 0, 1)` — modal entrance.
- **Entrance:** `cubic-bezier(0, 0, 0.2, 1)` — content fade-in.
### Duration Buckets
- **Fast (100ms):** color transitions, button hover.
- **Standard (200ms):** card hover.
- **Slow (320ms):** modal entry.
- **Fade (600ms):** hero load — long, magazine-style fade.
### Per-Component Micro-States
- **Button (soft-blue pill):** background `rgba(0,117,255,0.34)` → `rgba(0,117,255,0.50)` + border opacity rises. 100ms.
- **Button (secondary):** background `#191b1e` → `#212629`. 100ms.
- **Card (feature):** border opacity 0.07 → 0.12 on hover; no transform, no shadow. 200ms.
- **Code chip:** subtle background lighten on hover (`#191b1e` → `#212629`). 100ms.
- **Link (inline blue):** text `#3b9eff` → `#5fb1ff` on hover, with subtle underline. 100ms.
- **Nav-link:** text `#a1a4a5` → `#f0f0f0`. 100ms.
### Page Transitions
- Hero: long fade-in (600ms) with 12px translateY rise. The slow fade is part of the editorial register — fast transitions would feel SaaS-y.
- Below-fold sections: fade + 8px translateY on scroll-into-viewport. 320ms ease-entrance.
- Code block reveal: cross-fade with subtle border highlight on first appearance.
### Reduced Motion
`@media (prefers-reduced-motion: reduce)`:
- All transforms collapse to opacity-only.
- Hero fade reduces from 600ms to 200ms opacity.
- Hover state color transitions persist.
## 9. Accessibility & A11y ✨
### Contrast Pairs
- **Body text on canvas:** `#f0f0f0` on `#000000` → 18.7:1. **AAA.**
- **Soft text on canvas:** `#a1a4a5` on `#000000` → 9.6:1. **AAA at body.**
- **Muted text on canvas:** `#878d8f` on `#000000` → 6.4:1. **AA at body, AAA at large.**
- **Faint text:** `#5e6466` on `#000000` → 3.9:1. **AA at large only** — limit to ≥18px.
- **Disabled text:** `#3f4546` on `#000000` → 2.0:1 — fails. Reserve for disabled-only.
- **Inline link blue on canvas:** `#3b9eff` on `#000000` → 7.4:1. **AAA at body.**
- **CTA text on soft-blue:** `#ffffff` on effective `#1a3f7a` (translucent over black) → 8.2:1. **AAA.**
- **Body text on gray-1 card:** `#f0f0f0` on `#141517` → 16.8:1. **AAA.**
- **Body text on gray-3 code block:** `#f0f0f0` on `#212629` → 13.4:1. **AAA.**
### Focus Indicators
`2px solid #3b9eff` with 2px offset. The blue ring is the only saturated chromatic moment outside the CTA wash, and it doubles as a brand signal. Form fields use the same blue ring at `0 0 0 2px rgba(59,158,255,0.20)` softer halo.
### ARIA Pattern Recommendations
- **Top nav:** `<nav aria-label="Primary">` with skip-link.
- **Code blocks:** `role="region"` with `aria-label="Code example: send email with React"` so screen readers announce context. Copy button labeled `aria-label="Copy code"`.
- **Pricing:** `role="region"` with `aria-label="Pricing tiers"`.
- **Modal:** `role="dialog"` + `aria-modal="true"`.
- **Inline blue links:** `<a>` with descriptive text — never bare URLs.
- **CTA buttons:** semantic `<button>`/`<a>` with descriptive labels.
### Keyboard Navigation
- Tab order: nav → primary CTA → secondary CTA → page content → footer.
- Skip-link to `#main-content` first focus stop.
- Code-block copy buttons keyboard-accessible (Tab + Enter).
- FAQ accordion: Tab to expand, Enter/Space to toggle, Esc to collapse.
### Screen Reader Hints
- Domaine display headlines use semantic `<h1>` through `<h3>`.
- Code chips render in `<code>` elements so screen readers announce as code.
- API endpoint examples: announce literally — `"resend.emails.send"`.
- Decorative serif ornaments (rare): `aria-hidden="true"`.
### Reduced Motion
`prefers-reduced-motion: reduce` collapses transforms and reduces fade durations. Hover state color transitions persist.
## 10. Responsive Behavior
### Breakpoints
| Breakpoint | Width | Notes |
|---|---|---|
| Mobile | 0–640px | Single column, hero shrinks to ~600px tall, Domaine collapses to 56px |
| Tablet | 640–1024px | Two-column features, prose width holds at 680 |
| Desktop | 1024–1280px | Full layout, multi-column pricing |
| Wide | 1280–1536px+ | 1280px container caps |
### Touch Targets
- Buttons height 36 — pad to 44 with surrounding hit area on mobile.
- Code-block copy buttons 32px — pad to 44.
- Nav links 44px hit area on mobile.
### Collapsing Strategy
- **Hero:** display-hero shrinks 144 → 96 → 72 → 56 → 40. Line-height stays 0.95–1.05.
- **Feature alternating layout:** text-left/code-right pattern collapses to vertical stack at <1024px.
- **Pricing:** 3-col → vertical stack on mobile, "Most Popular" tier first.
- **Code blocks:** scale fluidly; mono text inside scrolls horizontally if line is long.
### Image Behavior
- Product UI screenshots: aspect-ratio container, scale to fit, lazy-loaded below fold.
- Customer logos: SVG, scale fluidly.
- Decorative serif ornaments: SVG, scale with display tier.
### Container Queries
Resend's pricing cards may use `@container` queries to switch from horizontal to vertical layouts based on container width — useful when a card sits in a narrow column.
## 11. Content & Voice ✨
### Tone
**Editorial, technical, restrained.** Resend writes like a magazine that happens to ship an SDK. Sentences are crafted; word choice favors precision over enthusiasm. The voice never says "amazing" or "powerful"; it says "send email" and lets the API examples carry the proof.
### Microcopy Patterns
- **Headlines:** elemental and direct. "Email for / developers", "The best email API for developers", "Send better emails."
- **Decks:** specifics + capability. "Build, send, and track emails with the modern API. From transactional to marketing — we've got you covered."
- **CTA verbs:** "Get Started", "Sign Up", "Read Docs", "Talk to Sales". Specific, never aspirational.
- **Error messages** (in-product convention): editorial-precise. "We couldn't send your email. Check the recipient's address and try again."
### Empty States
In-product / docs: "No emails sent yet. Try `resend.emails.send({...})` to send your first message." Always with a concrete code suggestion.
### Success Confirmations
- After signup: "Welcome. Your API key is on its way to your inbox."
- After send: "Email sent. View it in your dashboard."
- Toast pattern: minimal — small text + optional inline link.
### CTA Verb Conventions
The verbs Resend uses, ranked:
1. **Get Started** (primary conversion)
2. **Sign Up**
3. **Read Docs** / **Read the Docs**
4. **Talk to Sales** (enterprise)
5. **Try Resend** (rare, for campaigns)
6. **Sign In** (returning users)
What Resend *doesn't* say: "Start your free trial" (too SaaS), "Click here" (never), "Schedule a demo" (Resend prefers self-serve). The voice avoids B2B marketing-speak.
## 12. Dark Mode & Theming ✨
Resend is **dark-mode-only** by default. The brand identity is built around the pure-`#000` canvas + Domaine serif pairing — there's no light-mode marketing variant. The in-product app supports light/dark mode (light mode would invert canvas to `#ffffff` with `#0a0a0a` text, and Domaine remains at weight 400), but the marketing site stays dark across user preference.
If a future light-mode variant were implemented, the canonical token swap would be:
```yaml
colors-light:
bg: '#ffffff' # pure white — Domaine designed for high-contrast print
bg-elevated: '#fafafa' # gray-1 light
bg-elevated-2: '#f5f5f5' # gray-2 light
bg-elevated-3: '#ebebeb' # gray-3 light
surface: '#f5f5f5'
text: '#0a0a0a' # near-black, slight off-black for serif softness
text-soft: '#5e6466'
text-muted: '#878d8f'
brand: '#0a0a0a'
link-blue: '#0075ff' # full saturated blue (light backgrounds need more contrast)
link-blue-soft: 'rgba(0,117,255,0.12)' # softer wash on light
border: '#ebebeb'
border-soft: 'rgba(0,0,0,0.06)'
```
Domaine's contrast curve was designed for high-contrast print, so pure white + pure black is the canonical light variant — same maximum-contrast principle as the dark mode.
**Dark-only register** for marketing — the editorial atmosphere depends on the pure-black canvas.
## 13. Lineage & Influences
Resend's design lineage is **editorial publishing** — *The New Yorker*, *Bloomberg Businessweek*, *Harper's Magazine*, *The Paris Review* — repurposed for developer infrastructure. Klim Type Foundry's Domaine Display is the literary serif most associated with that tradition; pairing it with pure black creates the magazine-on-screen register that Vercel and Linear (with their geometric sans systems) explicitly avoid.
The four-voice type system (Domaine + Inter + ABC Favorit + Commit Mono) is unusual for the dev-tool category. Most peers commit to a single typographic voice (Linear: Inter; Vercel: Inter Display; Stripe: custom Söhne-derived; Supabase: Custom). Resend's stratified system mirrors how a magazine works: display serif for headlines, sans for body, dingbat sans for captions and ornaments, mono for code listings. Each voice has a domain.
The neutral grays-plus-blue-link palette is borrowed from Radix UI's color system — the same gray and blue ramps power most of Resend's UI tokens. The decision to use Radix's neutral palette signals "we're using the de facto open-source design tokens" in a way that closed brand systems can't.
What Resend *rejects*: signature accent colors (no Stripe iridescence, no Linear blue gradients), gradient surfaces (no glass morphism), feature-dense grids (no Vercel-style data-rich panels), large CTA buttons (no Supabase-style "Get Started" hero pill). The brand's discipline is **subtraction**: less is the visual identity.
**Influences:**
- **Klim Type Foundry / Domaine Display** — literary-magazine display serif (https://klim.co.nz)
- **The New Yorker / Bloomberg Businessweek** — editorial serif-on-black grammar (https://www.newyorker.com)
- **Commit Mono** — open-source terminal-grade mono (https://commitmono.com)
- **Lineto / ABC Favorit** — contemporary geometric sans for CTA voice (https://lineto.com/typefaces/favorit)
- **Inter** — body voice, dev-tool default (https://rsms.me/inter/)
- **Radix UI color system** — neutral gray + blue accent ramps (https://radix-ui.com/colors)
## 14. Do's and Don'ts
### Do's
- **Do** reserve **Domaine Display** for hero + h1–h3 only — its presence is what defines the brand, and over-use would dilute it. h4 and below are Inter.
- **Do** use **Commit Mono** for every code chip and inline API token; it's the third voice the system depends on.
- **Do** use **ABC Favorit** for buttons, nav, labels — the deliberate fourth register that's neither serif (drama) nor body (neutrality).
- **Do** keep the canvas at pure `#000` — Domaine's contrast curve was designed for high-contrast print, and off-black backgrounds dull its serifs.
- **Do** ship the primary CTA as a small soft-blue pill (`rgba(0,117,255,0.34)` background, 36px tall, `8/16` padding). The compactness keeps the eye on Domaine.
- **Do** use the three-step gray ladder (`#141517 / #191b1e / #212629`) for surface elevation — 4–6 lightness units apart, deliberately subtle.
- **Do** use faint-glow borders (`rgba(255,255,255,0.07)`) instead of solid lines or shadows. The faint glow is the depth language.
- **Do** breathe at 120–200px between sections. The editorial pacing is part of the brand identity.
- **Do** enable Domaine's discretionary ligatures (`dlig`) at display tier — `ct`, `st` ligatures are the editorial fingerprint.
- **Do** use the slashed zero in Commit Mono — distinguishes 0 from O in API examples.
### Don'ts
- **Don't** introduce a saturated brand accent; the system depends on neutral-plus-serif for its editorial register. Adding a "Resend orange" or "Resend purple" would tip the brand toward generic SaaS.
- **Don't** weight Domaine at 600+ for headlines; the regular cut is what gives the type its bookish authority.
- **Don't** mix Inter into the hero — body Inter at H1 size reads as a different brand entirely (Linear / Vercel territory).
- **Don't** use shadows for elevation. The surface ladder + faint-glow border is the depth language.
- **Don't** make the CTA large. The small pill is the discipline; a 56px hero CTA pill would dominate the composition and silence Domaine.
- **Don't** add gradient washes or glass effects. The pure-black canvas is the brand.
- **Don't** drop into multi-column dense feature grids. Top-to-bottom editorial pacing is the layout language.
- **Don't** use system serif fallbacks (Georgia, Times) at hero size if Domaine fails to load — fall back to Inter at the same size instead. Generic serifs would look broken.
- **Don't** mix the four type voices. Domaine + Inter + ABC Favorit + Commit Mono have specific jobs; using ABC Favorit for body would dilute the system.
- **Don't** off-black the canvas to "soften" the serifs. Domaine was made for pure black; calibrated off-blacks (`#0a0a0a`, `#141517`) reduce the type's legibility curve.
## 15. Agent Prompt Guide
### Quick Color Reference
```
bg: #000000
bg-elevated (gray-1): #141517
bg-elevated-2 (gray-2): #191b1e
bg-elevated-3 (gray-3): #212629
text: #f0f0f0
text-soft: #a1a4a5
text-muted: #878d8f
link-blue: #3b9eff
cta-bg: rgba(0,117,255,0.34)
border-glow: rgba(255,255,255,0.07)
```
### Example Component Prompts
- **Hero:** "Create a centered hero on a `#000000` pure-black canvas with a 96–144px Domaine Display / weight 400 / line-height 0.95 / tracking -0.015em headline reading 'Email for / developers' with a line break on the slash. Below: an 18px Inter 400 deck in `#a1a4a5` muted, then a small primary CTA pill in `rgba(0,117,255,0.34)` background / `#ffffff` text / 9999 radius / `8px 16px` padding / 36px tall in ABC Favorit 14/500. Generous 120px space between hero elements."
- **Code-sample feature row:** "Design a feature row split horizontally: left side has h2 in Domaine 64/400 / line-height 1.05, body in Inter 16/400 `#a1a4a5`, an inline code chip in Commit Mono 14 reading `resend.emails.send({...})` with `#191b1e` background and faint-glow border. Right side has a `#212629` code block with 8px radius, 20×24 padding, multi-line Commit Mono code with proper syntax-highlight tokens."
- **Pricing card:** "Place a pricing tier card with `#141517` background, `1px solid rgba(255,255,255,0.07)` faint-glow border, 16px radius, 40px padding. Tier name in ABC Favorit 12/500 UPPERCASE label `0.04em` tracking. Price in Domaine 64/400. Features list in Inter 16/400 with mint `#3ddc84` checkmarks. Subscribe CTA at the bottom — small soft-blue pill, full width."
- **Feature card:** "Build a feature card with `#141517` background, `1px solid rgba(255,255,255,0.07)` faint-glow border, 12px radius, 32px padding, no shadow. Title in Inter 24/500 (NOT Domaine — h4 is Inter), body in Inter 16/400 `#a1a4a5`, optional inline code chip."
- **Soft-blue CTA pill:** "Create a primary CTA as `rgba(0,117,255,0.34)` background (translucent blue wash) with `#ffffff` text, `1px solid rgba(59,158,255,0.40)` border, full pill radius (9999), `8px 16px` padding, 36px height, ABC Favorit 14/500 label 'Get Started'. Hover: background opacity rises to 0.50, border opacity rises. The button is conspicuously small to keep eye on Domaine."
- **Code block (multi-line):** "Render a code block at `#212629` background, `1px solid rgba(255,255,255,0.07)` border, 8px radius, `20px 24px` padding, Commit Mono 14/400 `#f0f0f0`, slashed zero on. Add a copy icon button in the top-right corner that shows a check on click."
### Iteration Guide
1. **Anchor canvas at pure `#000000`.** Domaine was designed for high-contrast print. Off-black tints (`#0a0a0a`, `#141517`) dull the serifs and tip the page toward generic dev-tool dark mode.
2. **Set Domaine at weight 400 only.** Bolder weights lose the editorial register. The regular cut at 96–144px is the brand voice.
3. **Reserve Domaine for h1–h3 (40px+).** Below 40px, Domaine loses presence. h4 onward is Inter — the family swap is deliberate.
4. **Make the CTA small.** 36px tall, `8/16` padding, full pill in soft-blue wash. A larger CTA would dominate the composition. The compactness is the discipline.
5. **Use four type voices with distinct jobs.** Domaine = drama (display). Inter = neutrality (body). ABC Favorit = function (UI/CTA). Commit Mono = code. Mixing them is forbidden.
6. **Three-step gray ladder for elevation.** `#141517 / #191b1e / #212629` — 4–6 lightness units apart. Subtle is the point. Bigger jumps would feel SaaS.
7. **Faint-glow borders, no shadows.** `rgba(255,255,255,0.07)` reads as soft backlight. Shadows would compete with Domaine's serif weight.
8. **Breathe at 120–200px between sections.** Editorial pacing, not lavish. Vercel/Linear use 64–96; Apple uses 200+. Resend lives at 120–160 — the magazine column rhythm.
1. Visual Theme & Atmosphere
Resend’s marketing site lives at pure #000 and lets a 96–144px Domaine Display serif do the heavy lifting. The hero “Email for / developers” arrives at weight 400 with -0.96px tracking — Domaine’s organic counters and pronounced ball terminals turn the line into a magazine opener, not a typical SaaS hero. The body voice is Inter at 16px; inline code drops to Commit Mono; the CTA uses ABC Favorit. The visual register is Bloomberg Businessweek wearing developer-tool clothing.
Where peer dev-infra sites (Vercel, Supabase, Linear) commit to geometric sans systems, Resend’s serif-led identity is what carries the brand: there’s no signature accent colour, no chromatic gimmick. The canvas is #000, the type is editorial, and the link blue (#3b9eff) is borrowed from Radix UI’s blue-10 — neutral enough not to compete with the typography. The brand’s primary signal is the serif itself, deliberately the only ornament on the page.
Below the hero, sections breathe with editorial pacing — 120–200px of vertical space between sections, generous prose widths (680px), and a deliberate avoidance of multi-column information density. The page reads top-to-bottom like a long-form essay rather than a feature-grid landing. Each section carries a single h2 in Domaine, a body paragraph or two in Inter, and a code sample in Commit Mono. Cards are sparse; product screenshots appear inline rather than crowding the layout.
The signature design move is the small pill CTA. The primary action (“Get Started” or “Sign Up”) renders as a tiny rounded pill in a faint-blue wash (rgba(0,117,255,0.34)), only 36px tall with 8/16 padding — conspicuously small relative to the 96–144px Domaine display above it. The size discipline keeps the editorial typography in command of the composition. Where Stripe makes the CTA the visual hero, Resend treats it as a footnote.
The surface ladder is three near-imperceptible gray stops (#141517 → #191b1e → #212629) — each just 4–6 lightness units apart. The differences read on a calibrated monitor; on most screens the three look nearly identical. That subtlety is intentional: Resend doesn’t want elevation to compete with type. Cards lift through hairline borders (rgba(255,255,255,0.07) — a faint glow rather than a solid line) rather than shadow-and-elevation drama.
Key Characteristics:
- Pure
#000canvas — no off-black calibration, the serif needs maximum contrast. - Domaine Display serif at 96–144px, weight 400 only — editorial register, not bold.
- Three distinct type voices: Domaine (display), Inter (body), Commit Mono (code), ABC Favorit (CTA).
- Small pill CTA — 36px tall in faint-blue wash, deliberately understated.
- Three-step gray ladder (
#141517 / #191b1e / #212629) — 4–6 lightness units apart. - Hairline borders (
rgba(255,255,255,0.07)) — faint glow, not solid line. - Editorial pacing — 120–200px section gaps, 680px prose width.
- No signature hue — neutral grays plus serif is the entire visual identity.
- Blue accent (
#3b9eff) only for inline links and CTA wash — never as fill. - Centered hero composition — like a magazine cover.
2. Color Palette & Roles
Primary
- Background (
#000000): pure black canvas, no off-black calibration. The serif needs maximum contrast curves designed for high-contrast print. - Text (
#f0f0f0): primary copy — slightly off-white to soften against pure black. Mapped to--color-gray-12. - Brand (
#f0f0f0): the brand voice is the type itself — primary “accent” stays neutral. There’s no signature hue.
Brand & Dark
Three near-imperceptible gray stops form the surface ladder:
- bg-elevated (
#141517):--color-gray-1— first surface stop. - bg-elevated-2 / surface (
#191b1e):--color-gray-2— card panels, primary card surface. - bg-elevated-3 / surface-2 (
#212629):--color-gray-3— code blocks, input fields. - bg-elevated-4 / surface-3 (
#2a3035):--color-gray-4— popover hover, deepest elevated.
Accent
The single chromatic accent — used very sparingly, never as a fill on chrome:
- Link Blue (
#3b9eff):--color-blue-10— inline links in copy, focus rings. - Link Blue Hover (
#5fb1ff): lighter blue. - Link Blue Soft (
rgba(0,117,255,0.34)):--color-blue-4— the CTA wash. The primary chromatic event on the page. - Link Blue Deep (
#0075ff): full saturated blue, rare.
Semantic accents (used inside docs and product screenshots, rare on marketing):
- Mint (
#3ddc84): success / API key indicator. - Amber (
#ffba08): warning. - Coral (
#ff5e5b): danger / error.
Interactive
- CTA Background (
rgba(0,117,255,0.34)): the soft-blue wash on primary CTA. - CTA Text (
#ffffff): white on soft-blue. - Link (
#3b9eff): inline link in copy. - Focus Ring (
2px solid #3b9eff): blue ring with 2px offset on canvas.
Neutral Scale
The Radix gray ramp (truncated to the values Resend uses):
- Text (
#f0f0f0): primary copy,--color-gray-12. - Text Soft (
#a1a4a5): secondary copy,--color-gray-11. - Text Muted (
#878d8f): captions, metadata,--color-gray-10. - Text Faint (
#5e6466): disabled,--color-gray-9. - Text Disabled (
#3f4546): faintest,--color-gray-7.
Surface & Borders
- Surface (
#191b1e): primary card surface (alias of bg-elevated-2). - Surface 2 (
#212629): code blocks, input fields. - Surface 3 (
#2a3035): nested elevated. - Border (
#212629): hairline divider — same as surface-2, used as outline. - Border Soft (
rgba(255,255,255,0.07)): the faint glow border — not a solid line, more like a subtle backlight. - Border Strong (
rgba(255,255,255,0.16)): hover/focus outline.
Shadow Colors
- Ambient (
rgba(0,0,0,0.40) 0 1px 2px): rare faint lift. - Standard (
rgba(0,0,0,0.50) 0 4px 12px): hover elevation. - Elevated (
rgba(0,0,0,0.60) 0 12px 32px): modal. - Deep (
rgba(0,0,0,0.80) 0 24px 48px): rare backdrop.
Resend uses shadows sparingly — most depth comes from the surface ladder and faint-glow borders. Shadows would add visual weight that competes with the editorial typography.
Semantic
- Success (
#3ddc84): mint. - Warning (
#ffba08): amber. - Danger (
#ff5e5b): coral. - Info (
#3b9eff): blue.
3. Typography Rules
Font Family
Four distinct type voices — the most stratified type system in the dev-tool category:
- Display:
"domaine", "Domaine Display", ui-serif, Georgia, Cambria, "Times New Roman", Times, serif. Klim Type Foundry’s literary book serif. Weight 400 only — Domaine carries enough presence at regular that bolder weights would feel heavy. - Body:
inter, ui-sans-serif, system-ui, sans-serif. The dev-tool default — Inter at 400/500/600 for long-form documentation legibility. - UI / CTA:
"aBCFavorit", "ABC Favorit", ui-sans-serif, system-ui, sans-serif. Lineto’s contemporary geometric sans at 400/500. Used for buttons, nav, labels — a deliberate third register, neither serif (Domaine’s drama) nor body (Inter’s neutrality). - Mono:
"commitMono", "Commit Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace. Open-source terminal-grade mono with intentionally over-equalised stem widths.
OpenType Features
- Domaine:
kern, liga, dlig— kerning, standard ligatures, and discretionary ligatures (Domaine’sct,stligatures appear at display sizes). - Inter:
kern, liga, calt— standard. - ABC Favorit:
kern, liga. - Commit Mono:
kern, tnum, zero— tabular figures and slashed zero for code legibility.
Hierarchy
| Role | Font | Size | Weight | Line Height | Letter Spacing | OT Features | Notes |
|---|---|---|---|---|---|---|---|
| display-hero | Domaine | 144 | 400 | 0.95 | -0.015em | kern, liga, dlig | Largest hero (rare) |
| display-large | Domaine | 120 | 400 | 0.98 | -0.012em | kern, liga, dlig | Section hero |
| h1 | Domaine | 96 | 400 | 1.0 | -0.01em | kern, liga, dlig | Page H1 — “Email for / developers” |
| h2 | Domaine | 64 | 400 | 1.05 | -0.01em | kern, liga | Section heads |
| h3 | Domaine | 40 | 400 | 1.15 | -0.005em | kern, liga | Sub-section heads |
| h4 | Inter | 24 | 500 | 1.30 | 0 | kern, liga | Card titles — Inter, not Domaine (only at h1–h3) |
| body-large | Inter | 18 | 400 | 1.6 | 0 | kern, liga | Hero deck |
| body | Inter | 16 | 400 | 1.5 | 0 | kern, liga | Default body |
| body-small | Inter | 14 | 400 | 1.5 | 0 | kern, liga | Footer body |
| button | ABC Favorit | 14 | 500 | 1.0 | 0 | kern | CTA label |
| button-large | ABC Favorit | 15 | 500 | 1.0 | 0 | kern | Hero CTA |
| nav-link | ABC Favorit | 14 | 400 | 1.40 | 0 | kern | Top nav |
| label | ABC Favorit | 12 | 500 | 1.30 | 0.04em | kern, uppercase | UPPERCASE eyebrow |
| label-mono | Commit Mono | 11 | 500 | 1.30 | 0.04em | tnum, uppercase | Mono UPPERCASE category |
| caption | Inter | 13 | 400 | 1.4 | 0 | kern | Caption |
| micro | ABC Favorit | 11 | 500 | 1.3 | 0.02em | kern | Pill / badge text |
| code | Commit Mono | 14 | 400 | 1.6 | 0 | tnum, zero | Inline code chip |
| code-bold | Commit Mono | 14 | 500 | 1.6 | 0 | tnum, zero | Code emphasis |
Principles
- Domaine at 400 only. Resend never weights Domaine at 600+ for headlines. The regular cut is what gives the type its bookish authority — heavier weights would tip the page toward marketing impact.
- Reserve Domaine for hero + h1–h3. Below h3 (40px), Domaine loses its presence and the body voice (Inter) takes over. h4 onward is Inter.
- Three voices, three jobs. Display = Domaine (drama). Body = Inter (neutrality). UI/CTA = ABC Favorit (functionality). Mono = Commit Mono (code). Each face has a distinct role; mixing them is forbidden.
- Discretionary ligatures. Domaine’s
ct,st,ftligatures are enabled at display tier — they’re the brand’s editorial fingerprint. At body sizes they’d be precious. - Pure
#000for serif contrast. Off-black backgrounds dull Domaine’s serifs. The pure black is part of the type’s design — it was made for high-contrast print. - No serif emphasis. Italics are rare. Domaine carries every drama-tier voice without italic.
- Slashed zero in mono. Commit Mono’s
zerofeature distinguishes 0 from O in API examples — important for keys and IDs. - CTA stays small. The button is rendered in ABC Favorit at 14px, height 36px — conspicuously small to keep eye on Domaine.
4. Component Stylings
Buttons
Primary (Soft-Blue Pill)
- Background:
rgba(0,117,255,0.34)—--color-blue-4translucent - Text:
#ffffff - Padding:
8px 16px, height 36 - Radius: 9999 (full pill)
- Border:
1px solid rgba(59,158,255,0.40)— subtle blue trim - Font: button (ABC Favorit 14 / 500)
- Hover: background
rgba(0,117,255,0.50)+ border opacity rises - Use: hero CTA — Get Started, Sign Up. The only chromatic chrome on the page.
Secondary (Dark-Surface Pill)
- Background:
#191b1e - Text:
#f0f0f0 - Padding:
8px 16px, height 36 - Radius: 9999
- Border:
1px solid #212629 - Hover: background
#212629+ borderrgba(255,255,255,0.16) - Use: Talk to Sales / Read Docs — neutral pair to primary.
Ghost (Tertiary)
- Background: transparent
- Text:
#f0f0f0 - Padding:
6px 12px - Radius: 9999
- Hover:
rgba(255,255,255,0.05)background - Use: nav button, inline ghost.
Cards
Feature Card
- Background:
#141517(gray-1) - Border:
1px solid rgba(255,255,255,0.07)— faint glow - Radius: 12
- Padding: 32
- Use: feature card on canvas — first elevation tier.
Elevated Panel
- Background:
#191b1e(gray-2) - Border:
1px solid rgba(255,255,255,0.07) - Radius: 12
- Padding: 40
- Use: second-tier elevated, e.g., highlighted feature.
Pricing Card
- Background:
#141517 - Border:
1px solid rgba(255,255,255,0.07) - Radius: 16 (slightly larger)
- Padding: 40
- Use: pricing tier card.
Pricing Card (Featured)
- Background:
#191b1e(one tier up) - Border:
1px solid #3b9eff— full blue accent border (rare chromatic moment) - Radius: 16
- Padding: 40
- Use: featured pricing tier — the rare full-saturation blue moment.
Code
Code Block (Multi-Line)
- Background:
#212629(gray-3) - Text:
#f0f0f0 - Border:
1px solid rgba(255,255,255,0.07) - Radius: 8
- Padding:
20px 24px - Font: code (Commit Mono 14 / 400)
- Use: API code samples,
resend.emails.send(...)snippets.
Code Chip (Inline)
- Background:
#191b1e(gray-2) - Text:
#f0f0f0 - Border:
1px solid rgba(255,255,255,0.07) - Radius: 6
- Padding:
4px 8px - Font: code
- Use: inline
npm install resend, API endpoint reference.
Inputs / Forms
Input
- Background:
#212629 - Border:
1px solid rgba(255,255,255,0.16) - Radius: 8
- Padding:
10px 14px, height 40 - Focus: border
#3b9eff+ ring0 0 0 2px rgba(59,158,255,0.20) - Use: email signup, contact form.
Badges
Neutral Pill
- Background:
#191b1e - Text:
#a1a4a5 - Border:
1px solid rgba(255,255,255,0.07) - Radius: 9999, Padding:
4px 12px - Font: micro (11/500 ABC Favorit)
- Use: NEW / category badges.
Soft-Blue Pill
- Background:
rgba(0,117,255,0.20) - Text:
#5fb1ff - Radius: 9999
- Use: feature badges where blue is earned.
Navigation
Top nav 64px tall, #000000 background (matches canvas) with no border on hero, 1px solid rgba(255,255,255,0.07) border-bottom on scroll. Links: ABC Favorit 14/400 #a1a4a5, hover to #f0f0f0. Right side: Sign In (ghost) + Get Started (soft-blue pill primary).
5. Layout Principles
Spacing System
Base 4px. Scale: 4 / 8 / 12 / 16 / 24 / 32 / 48 / 64 / 80 / 120 / 160 / 200. Section gaps run 120–200px (significantly more lavish than dev-tool peers); inside-card padding 32–40; nav padding 6px 12px; grid gap 24.
The density is editorial — not the dense feature grids of Linear/Vercel, not the lavish breathing room of Apple. Resend’s pacing matches a literary magazine’s column: top-to-bottom rhythm, generous between-section air, prose-width centered.
Grid & Container
- Page width: 1280px max.
- Prose width: 680px (intro paragraphs and long-form copy).
- Header height: 64px.
- Hero height: ~800px (taller than peer dev-tool sites).
- Grid gap: 24px between feature cards.
The page is center-justified, top-to-bottom. Multi-column layouts are rare; when they appear (pricing, comparison tables), they break out of the prose-width and use the full 1280px container.
Whitespace Philosophy
Resend’s whitespace is literary, not lavish. Sections breathe at 120–200px gaps — twice what Linear or Vercel use, half what Apple uses. The pacing rewards careful reading and gives Domaine room to land. Each h2 sits in its own visual paragraph, with 80–120px above and 32–48px below.
Section Cadence
Pure black canvas runs edge-to-edge. Section breaks come from typography, not background shifts:
- Hero (centered, ~800px tall) — Domaine 96–144px headline + small CTA.
- Feature stack (alternating: text-left + code-right, then text-right + code-left).
- Customer logo cloud (compact, faint).
- Code-sample showcase (full-width code block in surface-2).
- Pricing (3-col card grid).
- FAQ (single-column accordion).
- Footer.
The dark-canvas-throughout discipline is the brand’s editorial signature — Resend doesn’t break into light bands.
6. Shapes & Radius Scale
| Tier | Value | Use |
|---|---|---|
| None | 0 | Edge-bound (rare) |
| Micro | 2 | Decorative pills |
| XS | 4 | Tag chips |
| SM | 6 | Code chips, small inputs |
| MD | 8 | Code blocks, inputs |
| LG | 12 | Cards |
| XL | 16 | Pricing cards |
| Pill | 9999 | Primary CTA — full pill, deliberately small |
Resend’s radius scale is short and disciplined. The full-pill (9999) is reserved for the small primary CTA and avatar elements — its compactness keeps the eye on Domaine. Cards land at 12 (lg); pricing at 16 (xl); code blocks and inputs at 8 (md).
No compound radii. Each component has consistent corners.
7. Depth & Elevation
| Level | Treatment | Use |
|---|---|---|
| 0 | Flat — no shadow | Body copy on canvas |
| 1 | Tonal #141517 over #000 + faint-glow border | Feature cards |
| 2 | Tonal #191b1e + faint-glow border | Elevated panels |
| 3 | Tonal #212629 + faint-glow border | Code blocks, inputs |
| 4 | 0 12px 32px rgba(0,0,0,0.60) | Modal (rare) |
| 5 | 0 24px 48px rgba(0,0,0,0.80) | Modal backdrop (rare) |
Shadow Philosophy
Resend uses tonal layering plus faint-glow borders — almost no shadows. The three near-imperceptible gray stops (#141517 → #191b1e → #212629) are each just 4–6 lightness units apart; the differences are subtle on most screens. The faint-glow border (rgba(255,255,255,0.07)) reads as a soft backlight rather than a solid line, giving cards a floating quality without the weight of shadow.
The discipline is: shadows would compete with Domaine’s serif, so they’re avoided. The editorial typography is the figure; the gray ladder is just the ground.
8. Interaction & Motion ✨
Easing Curves
- Standard:
cubic-bezier(0.4, 0, 0.2, 1)— default. - Emphasized:
cubic-bezier(0.2, 0, 0, 1)— modal entrance. - Entrance:
cubic-bezier(0, 0, 0.2, 1)— content fade-in.
Duration Buckets
- Fast (100ms): color transitions, button hover.
- Standard (200ms): card hover.
- Slow (320ms): modal entry.
- Fade (600ms): hero load — long, magazine-style fade.
Per-Component Micro-States
- Button (soft-blue pill): background
rgba(0,117,255,0.34)→rgba(0,117,255,0.50)+ border opacity rises. 100ms. - Button (secondary): background
#191b1e→#212629. 100ms. - Card (feature): border opacity 0.07 → 0.12 on hover; no transform, no shadow. 200ms.
- Code chip: subtle background lighten on hover (
#191b1e→#212629). 100ms. - Link (inline blue): text
#3b9eff→#5fb1ffon hover, with subtle underline. 100ms. - Nav-link: text
#a1a4a5→#f0f0f0. 100ms.
Page Transitions
- Hero: long fade-in (600ms) with 12px translateY rise. The slow fade is part of the editorial register — fast transitions would feel SaaS-y.
- Below-fold sections: fade + 8px translateY on scroll-into-viewport. 320ms ease-entrance.
- Code block reveal: cross-fade with subtle border highlight on first appearance.
Reduced Motion
@media (prefers-reduced-motion: reduce):
- All transforms collapse to opacity-only.
- Hero fade reduces from 600ms to 200ms opacity.
- Hover state color transitions persist.
9. Accessibility & A11y ✨
Contrast Pairs
- Body text on canvas:
#f0f0f0on#000000→ 18.7:1. AAA. - Soft text on canvas:
#a1a4a5on#000000→ 9.6:1. AAA at body. - Muted text on canvas:
#878d8fon#000000→ 6.4:1. AA at body, AAA at large. - Faint text:
#5e6466on#000000→ 3.9:1. AA at large only — limit to ≥18px. - Disabled text:
#3f4546on#000000→ 2.0:1 — fails. Reserve for disabled-only. - Inline link blue on canvas:
#3b9effon#000000→ 7.4:1. AAA at body. - CTA text on soft-blue:
#ffffffon effective#1a3f7a(translucent over black) → 8.2:1. AAA. - Body text on gray-1 card:
#f0f0f0on#141517→ 16.8:1. AAA. - Body text on gray-3 code block:
#f0f0f0on#212629→ 13.4:1. AAA.
Focus Indicators
2px solid #3b9eff with 2px offset. The blue ring is the only saturated chromatic moment outside the CTA wash, and it doubles as a brand signal. Form fields use the same blue ring at 0 0 0 2px rgba(59,158,255,0.20) softer halo.
ARIA Pattern Recommendations
- Top nav:
<nav aria-label="Primary">with skip-link. - Code blocks:
role="region"witharia-label="Code example: send email with React"so screen readers announce context. Copy button labeledaria-label="Copy code". - Pricing:
role="region"witharia-label="Pricing tiers". - Modal:
role="dialog"+aria-modal="true". - Inline blue links:
<a>with descriptive text — never bare URLs. - CTA buttons: semantic
<button>/<a>with descriptive labels.
Keyboard Navigation
- Tab order: nav → primary CTA → secondary CTA → page content → footer.
- Skip-link to
#main-contentfirst focus stop. - Code-block copy buttons keyboard-accessible (Tab + Enter).
- FAQ accordion: Tab to expand, Enter/Space to toggle, Esc to collapse.
Screen Reader Hints
- Domaine display headlines use semantic
<h1>through<h3>. - Code chips render in
<code>elements so screen readers announce as code. - API endpoint examples: announce literally —
"resend.emails.send". - Decorative serif ornaments (rare):
aria-hidden="true".
Reduced Motion
prefers-reduced-motion: reduce collapses transforms and reduces fade durations. Hover state color transitions persist.
10. Responsive Behavior
Breakpoints
| Breakpoint | Width | Notes |
|---|---|---|
| Mobile | 0–640px | Single column, hero shrinks to ~600px tall, Domaine collapses to 56px |
| Tablet | 640–1024px | Two-column features, prose width holds at 680 |
| Desktop | 1024–1280px | Full layout, multi-column pricing |
| Wide | 1280–1536px+ | 1280px container caps |
Touch Targets
- Buttons height 36 — pad to 44 with surrounding hit area on mobile.
- Code-block copy buttons 32px — pad to 44.
- Nav links 44px hit area on mobile.
Collapsing Strategy
- Hero: display-hero shrinks 144 → 96 → 72 → 56 → 40. Line-height stays 0.95–1.05.
- Feature alternating layout: text-left/code-right pattern collapses to vertical stack at <1024px.
- Pricing: 3-col → vertical stack on mobile, “Most Popular” tier first.
- Code blocks: scale fluidly; mono text inside scrolls horizontally if line is long.
Image Behavior
- Product UI screenshots: aspect-ratio container, scale to fit, lazy-loaded below fold.
- Customer logos: SVG, scale fluidly.
- Decorative serif ornaments: SVG, scale with display tier.
Container Queries
Resend’s pricing cards may use @container queries to switch from horizontal to vertical layouts based on container width — useful when a card sits in a narrow column.
11. Content & Voice ✨
Tone
Editorial, technical, restrained. Resend writes like a magazine that happens to ship an SDK. Sentences are crafted; word choice favors precision over enthusiasm. The voice never says “amazing” or “powerful”; it says “send email” and lets the API examples carry the proof.
Microcopy Patterns
- Headlines: elemental and direct. “Email for / developers”, “The best email API for developers”, “Send better emails.”
- Decks: specifics + capability. “Build, send, and track emails with the modern API. From transactional to marketing — we’ve got you covered.”
- CTA verbs: “Get Started”, “Sign Up”, “Read Docs”, “Talk to Sales”. Specific, never aspirational.
- Error messages (in-product convention): editorial-precise. “We couldn’t send your email. Check the recipient’s address and try again.”
Empty States
In-product / docs: “No emails sent yet. Try resend.emails.send({...}) to send your first message.” Always with a concrete code suggestion.
Success Confirmations
- After signup: “Welcome. Your API key is on its way to your inbox.”
- After send: “Email sent. View it in your dashboard.”
- Toast pattern: minimal — small text + optional inline link.
CTA Verb Conventions
The verbs Resend uses, ranked:
- Get Started (primary conversion)
- Sign Up
- Read Docs / Read the Docs
- Talk to Sales (enterprise)
- Try Resend (rare, for campaigns)
- Sign In (returning users)
What Resend doesn’t say: “Start your free trial” (too SaaS), “Click here” (never), “Schedule a demo” (Resend prefers self-serve). The voice avoids B2B marketing-speak.
12. Dark Mode & Theming ✨
Resend is dark-mode-only by default. The brand identity is built around the pure-#000 canvas + Domaine serif pairing — there’s no light-mode marketing variant. The in-product app supports light/dark mode (light mode would invert canvas to #ffffff with #0a0a0a text, and Domaine remains at weight 400), but the marketing site stays dark across user preference.
If a future light-mode variant were implemented, the canonical token swap would be:
colors-light:
bg: '#ffffff' # pure white — Domaine designed for high-contrast print
bg-elevated: '#fafafa' # gray-1 light
bg-elevated-2: '#f5f5f5' # gray-2 light
bg-elevated-3: '#ebebeb' # gray-3 light
surface: '#f5f5f5'
text: '#0a0a0a' # near-black, slight off-black for serif softness
text-soft: '#5e6466'
text-muted: '#878d8f'
brand: '#0a0a0a'
link-blue: '#0075ff' # full saturated blue (light backgrounds need more contrast)
link-blue-soft: 'rgba(0,117,255,0.12)' # softer wash on light
border: '#ebebeb'
border-soft: 'rgba(0,0,0,0.06)'Domaine’s contrast curve was designed for high-contrast print, so pure white + pure black is the canonical light variant — same maximum-contrast principle as the dark mode.
Dark-only register for marketing — the editorial atmosphere depends on the pure-black canvas.
13. Lineage & Influences
Resend’s design lineage is editorial publishing — The New Yorker, Bloomberg Businessweek, Harper’s Magazine, The Paris Review — repurposed for developer infrastructure. Klim Type Foundry’s Domaine Display is the literary serif most associated with that tradition; pairing it with pure black creates the magazine-on-screen register that Vercel and Linear (with their geometric sans systems) explicitly avoid.
The four-voice type system (Domaine + Inter + ABC Favorit + Commit Mono) is unusual for the dev-tool category. Most peers commit to a single typographic voice (Linear: Inter; Vercel: Inter Display; Stripe: custom Söhne-derived; Supabase: Custom). Resend’s stratified system mirrors how a magazine works: display serif for headlines, sans for body, dingbat sans for captions and ornaments, mono for code listings. Each voice has a domain.
The neutral grays-plus-blue-link palette is borrowed from Radix UI’s color system — the same gray and blue ramps power most of Resend’s UI tokens. The decision to use Radix’s neutral palette signals “we’re using the de facto open-source design tokens” in a way that closed brand systems can’t.
What Resend rejects: signature accent colors (no Stripe iridescence, no Linear blue gradients), gradient surfaces (no glass morphism), feature-dense grids (no Vercel-style data-rich panels), large CTA buttons (no Supabase-style “Get Started” hero pill). The brand’s discipline is subtraction: less is the visual identity.
Influences:
- Klim Type Foundry / Domaine Display — literary-magazine display serif (https://klim.co.nz)
- The New Yorker / Bloomberg Businessweek — editorial serif-on-black grammar (https://www.newyorker.com)
- Commit Mono — open-source terminal-grade mono (https://commitmono.com)
- Lineto / ABC Favorit — contemporary geometric sans for CTA voice (https://lineto.com/typefaces/favorit)
- Inter — body voice, dev-tool default (https://rsms.me/inter/)
- Radix UI color system — neutral gray + blue accent ramps (https://radix-ui.com/colors)
14. Do’s and Don’ts
Do’s
- Do reserve Domaine Display for hero + h1–h3 only — its presence is what defines the brand, and over-use would dilute it. h4 and below are Inter.
- Do use Commit Mono for every code chip and inline API token; it’s the third voice the system depends on.
- Do use ABC Favorit for buttons, nav, labels — the deliberate fourth register that’s neither serif (drama) nor body (neutrality).
- Do keep the canvas at pure
#000— Domaine’s contrast curve was designed for high-contrast print, and off-black backgrounds dull its serifs. - Do ship the primary CTA as a small soft-blue pill (
rgba(0,117,255,0.34)background, 36px tall,8/16padding). The compactness keeps the eye on Domaine. - Do use the three-step gray ladder (
#141517 / #191b1e / #212629) for surface elevation — 4–6 lightness units apart, deliberately subtle. - Do use faint-glow borders (
rgba(255,255,255,0.07)) instead of solid lines or shadows. The faint glow is the depth language. - Do breathe at 120–200px between sections. The editorial pacing is part of the brand identity.
- Do enable Domaine’s discretionary ligatures (
dlig) at display tier —ct,stligatures are the editorial fingerprint. - Do use the slashed zero in Commit Mono — distinguishes 0 from O in API examples.
Don’ts
- Don’t introduce a saturated brand accent; the system depends on neutral-plus-serif for its editorial register. Adding a “Resend orange” or “Resend purple” would tip the brand toward generic SaaS.
- Don’t weight Domaine at 600+ for headlines; the regular cut is what gives the type its bookish authority.
- Don’t mix Inter into the hero — body Inter at H1 size reads as a different brand entirely (Linear / Vercel territory).
- Don’t use shadows for elevation. The surface ladder + faint-glow border is the depth language.
- Don’t make the CTA large. The small pill is the discipline; a 56px hero CTA pill would dominate the composition and silence Domaine.
- Don’t add gradient washes or glass effects. The pure-black canvas is the brand.
- Don’t drop into multi-column dense feature grids. Top-to-bottom editorial pacing is the layout language.
- Don’t use system serif fallbacks (Georgia, Times) at hero size if Domaine fails to load — fall back to Inter at the same size instead. Generic serifs would look broken.
- Don’t mix the four type voices. Domaine + Inter + ABC Favorit + Commit Mono have specific jobs; using ABC Favorit for body would dilute the system.
- Don’t off-black the canvas to “soften” the serifs. Domaine was made for pure black; calibrated off-blacks (
#0a0a0a,#141517) reduce the type’s legibility curve.
15. Agent Prompt Guide
Quick Color Reference
bg: #000000
bg-elevated (gray-1): #141517
bg-elevated-2 (gray-2): #191b1e
bg-elevated-3 (gray-3): #212629
text: #f0f0f0
text-soft: #a1a4a5
text-muted: #878d8f
link-blue: #3b9eff
cta-bg: rgba(0,117,255,0.34)
border-glow: rgba(255,255,255,0.07)Example Component Prompts
-
Hero: “Create a centered hero on a
#000000pure-black canvas with a 96–144px Domaine Display / weight 400 / line-height 0.95 / tracking -0.015em headline reading ‘Email for / developers’ with a line break on the slash. Below: an 18px Inter 400 deck in#a1a4a5muted, then a small primary CTA pill inrgba(0,117,255,0.34)background /#fffffftext / 9999 radius /8px 16pxpadding / 36px tall in ABC Favorit 14/500. Generous 120px space between hero elements.” -
Code-sample feature row: “Design a feature row split horizontally: left side has h2 in Domaine 64/400 / line-height 1.05, body in Inter 16/400
#a1a4a5, an inline code chip in Commit Mono 14 readingresend.emails.send({...})with#191b1ebackground and faint-glow border. Right side has a#212629code block with 8px radius, 20×24 padding, multi-line Commit Mono code with proper syntax-highlight tokens.” -
Pricing card: “Place a pricing tier card with
#141517background,1px solid rgba(255,255,255,0.07)faint-glow border, 16px radius, 40px padding. Tier name in ABC Favorit 12/500 UPPERCASE label0.04emtracking. Price in Domaine 64/400. Features list in Inter 16/400 with mint#3ddc84checkmarks. Subscribe CTA at the bottom — small soft-blue pill, full width.” -
Feature card: “Build a feature card with
#141517background,1px solid rgba(255,255,255,0.07)faint-glow border, 12px radius, 32px padding, no shadow. Title in Inter 24/500 (NOT Domaine — h4 is Inter), body in Inter 16/400#a1a4a5, optional inline code chip.” -
Soft-blue CTA pill: “Create a primary CTA as
rgba(0,117,255,0.34)background (translucent blue wash) with#fffffftext,1px solid rgba(59,158,255,0.40)border, full pill radius (9999),8px 16pxpadding, 36px height, ABC Favorit 14/500 label ‘Get Started’. Hover: background opacity rises to 0.50, border opacity rises. The button is conspicuously small to keep eye on Domaine.” -
Code block (multi-line): “Render a code block at
#212629background,1px solid rgba(255,255,255,0.07)border, 8px radius,20px 24pxpadding, Commit Mono 14/400#f0f0f0, slashed zero on. Add a copy icon button in the top-right corner that shows a check on click.”
Iteration Guide
- Anchor canvas at pure
#000000. Domaine was designed for high-contrast print. Off-black tints (#0a0a0a,#141517) dull the serifs and tip the page toward generic dev-tool dark mode. - Set Domaine at weight 400 only. Bolder weights lose the editorial register. The regular cut at 96–144px is the brand voice.
- Reserve Domaine for h1–h3 (40px+). Below 40px, Domaine loses presence. h4 onward is Inter — the family swap is deliberate.
- Make the CTA small. 36px tall,
8/16padding, full pill in soft-blue wash. A larger CTA would dominate the composition. The compactness is the discipline. - Use four type voices with distinct jobs. Domaine = drama (display). Inter = neutrality (body). ABC Favorit = function (UI/CTA). Commit Mono = code. Mixing them is forbidden.
- Three-step gray ladder for elevation.
#141517 / #191b1e / #212629— 4–6 lightness units apart. Subtle is the point. Bigger jumps would feel SaaS. - Faint-glow borders, no shadows.
rgba(255,255,255,0.07)reads as soft backlight. Shadows would compete with Domaine’s serif weight. - Breathe at 120–200px between sections. Editorial pacing, not lavish. Vercel/Linear use 64–96; Apple uses 200+. Resend lives at 120–160 — the magazine column rhythm.
Drop resend into your project, then ship the actual sections in an afternoon.
1 · install design
npx design-md add resend 2 · ship landing page
npx agentkit init --design resend dark minimal
Linear
Dark-canvas product surface — pure-black ground, indigo accent, custom Inter weights, pi…
Docs
Install
Linear
webdesignhot
dark mono
Supabase
Off-black canvas, signature emerald `#3ecf8e`, Circular as display, Postgres-grade type…
Docs
Install
Supabase
webdesignhot
light minimal
Vercel
Brutalist developer-product polish — near-white canvas, near-pure black-on-near-white ty…
Docs
Install
Vercel
webdesignhot