LangChain vs Substack
61 token-level differences between these two design systems.
Background
#0f172a → #ffffff Text
#f8fafc → #363737 Brand
#1e90ff → #ff6719 Border
#1e293b → rgba(0, 0, 0, 0.10) Display font
Inter → Cahuenga Body size
16px → 19px colors 53 changed
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bg #0f172a → #ffffff ~
surface #1e293b → #ffffff ~
text #f8fafc → #363737 ~
text-strong #e2e8f0 → #1a1a1a ~
text-muted #94a3b8 → #878787 ~
text-faint #64748b → #a8a8a8 ~
brand #1e90ff → #ff6719 ~
brand-hover #1d4ed8 → #e85412 ~
border #1e293b → rgba(0, 0, 0, 0.10) ~
border-strong #334155 → rgba(0, 0, 0, 0.20) ~
border-soft #1e293b → rgba(0, 0, 0, 0.06) ~
success #10b981 → #0d8050 ~
warning #f59e0b → #d97706 ~
danger #f43f5e → #dc2626 ~
info #1e90ff → #2563eb +
bg-elev #fafaf7 +
bg-cream #fbf9f4 +
bg-soft #f6f6f3 +
surface-warm #fafaf7 +
text-soft #666c70 +
text-link #363737 +
brand-deep #cc4a0e +
brand-tint rgba(255, 103, 25, 0.10) +
brand-tint-strong rgba(255, 103, 25, 0.18) +
border-warm rgba(0, 0, 0, 0.08) +
selection-bg rgba(255, 103, 25, 0.20) +
shadow-soft rgba(0, 0, 0, 0.06) +
shadow-medium rgba(0, 0, 0, 0.10) +
reading-rule rgba(0, 0, 0, 0.08) −
bg-deep #020617 −
surface-soft #111827 −
surface-elevated #334155 −
surface-light #f8fafc −
text-body #cbd5e1 −
text-on-light #0f172a −
brand-active #1e40af −
brand-soft #dbeafe −
on-dark #f8fafc −
link #60a5fa −
link-hover #93c5fd −
link-on-light #1e90ff −
border-blue #1e90ff −
shadow-color rgba(2, 6, 23, 0.5) −
shadow-glow-blue rgba(30, 144, 255, 0.20) −
accent-emerald #10b981 −
accent-rose #f43f5e −
accent-amber #f59e0b −
accent-violet #8b5cf6 −
accent-cyan #06b6d4 −
code-keyword #60a5fa −
code-string #10b981 −
code-comment #64748b −
code-symbol #f59e0b typography 5 changed
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display {"family":"Inter","size":72} → {"family":"Cahuenga","size":56} ~
h1 {"family":"Inter","size":40} → {"family":"Cahuenga","size":40} ~
h2 {"family":"Inter","size":32} → {"family":"Cahuenga","size":32} ~
body {"family":"Inter","size":16} → {"family":"Spectral","size":19} ~
label {"family":"JetBrains Mono","size":11} → {"family":"Monaco","size":13} radius 1 changed
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button 8px → 6px spacing 2 changed
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lg 48px → 32px ~
xl 96px → 48px