Substack vs Optimism
60 token-level differences between these two design systems.
Background
#ffffff → #ffffff Text
#363737 → #000000 Brand
#ff6719 → #ff0420 Border
rgba(0, 0, 0, 0.10) → #e0e0e0 Display font
Cahuenga → Optimism Display Body size
19px → 16px colors 52 changed
~
bg-soft #f6f6f3 → #f5f5f5 ~
text #363737 → #000000 ~
text-muted #878787 → #5a5a5a ~
brand #ff6719 → #ff0420 ~
brand-hover #e85412 → #cc0319 ~
brand-deep #cc4a0e → #7d020f ~
border rgba(0, 0, 0, 0.10) → #e0e0e0 ~
border-strong rgba(0, 0, 0, 0.20) → #c0c0c0 ~
border-soft rgba(0, 0, 0, 0.06) → #ebebeb +
bg-strong #e6e6e6 +
bg-dark #000000 +
bg-dark-elev #1a1a1a +
bg-dark-deep #0a0a0a +
surface-card #ffffff +
surface-card-soft #f5f5f5 +
text-body #1a1a1a +
text-subtle #8a8a8a +
text-on-dark #ffffff +
text-on-dark-soft #a8a8a8 +
brand-active #a30214 +
brand-soft #ff04201a +
brand-glow rgba(255,4,32,0.40) +
brand-bright #ff3344 +
semantic-up #10b981 +
semantic-down #ef4444 +
semantic-warning #f59e0b +
semantic-info #ff0420 +
gradient-hero linear-gradient(135deg, #000000 0%, #1a1a1a 60%, #7d020f 100%) +
gradient-red linear-gradient(135deg, #ff0420 0%, #cc0319 100%) +
focus-ring rgba(255,4,32,0.45) +
scrim rgba(0,0,0,0.65) +
link #ff0420 +
link-hover #cc0319 −
bg-elev #fafaf7 −
bg-cream #fbf9f4 −
surface #ffffff −
surface-warm #fafaf7 −
text-strong #1a1a1a −
text-soft #666c70 −
text-faint #a8a8a8 −
text-link #363737 −
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) −
success #0d8050 −
warning #d97706 −
danger #dc2626 −
info #2563eb −
shadow-soft rgba(0, 0, 0, 0.06) −
shadow-medium rgba(0, 0, 0, 0.10) −
reading-rule rgba(0, 0, 0, 0.08) typography 5 changed
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display {"family":"Cahuenga","size":56} → {"family":"Optimism Display","size":72} ~
h1 {"family":"Cahuenga","size":40} → {"family":"Optimism Display","size":40} ~
h2 {"family":"Cahuenga","size":32} → {"family":"Optimism Display","size":32} ~
body {"family":"Spectral","size":19} → {"family":"Inter","size":16} ~
label {"family":"Monaco","size":13} → {"family":"JetBrains Mono","size":11} radius 2 changed
~
button 6px → 12px ~
pill 9999px → 999px spacing 1 changed
~
xl 48px → 64px