shadcn/ui vs Substack
57 token-level differences between these two design systems.
Background
#ffffff → #ffffff Text
#0a0a0a → #363737 Brand
#0a0a0a → #ff6719 Border
#e4e4e7 → rgba(0, 0, 0, 0.10) Display font
Geist → Cahuenga Body size
16px → 19px colors 51 changed
~
surface #fafafa → #ffffff ~
text #0a0a0a → #363737 ~
text-strong #000000 → #1a1a1a ~
text-muted #71717a → #878787 ~
text-faint #a1a1aa → #a8a8a8 ~
brand #0a0a0a → #ff6719 ~
brand-hover #1a1a1a → #e85412 ~
on-brand #fafafa → #ffffff ~
border #e4e4e7 → rgba(0, 0, 0, 0.10) ~
border-soft #f4f4f5 → rgba(0, 0, 0, 0.06) ~
border-strong #d4d4d8 → rgba(0, 0, 0, 0.20) ~
selection-bg rgba(10, 10, 10, 0.1) → rgba(255, 103, 25, 0.20) ~
success #10b981 → #0d8050 ~
warning #f59e0b → #d97706 ~
info #3b82f6 → #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) +
danger #dc2626 +
shadow-soft rgba(0, 0, 0, 0.06) +
shadow-medium rgba(0, 0, 0, 0.10) +
reading-rule rgba(0, 0, 0, 0.08) −
surface-strong #f4f4f5 −
surface-muted #f4f4f5 −
surface-accent #f4f4f5 −
surface-elevated #ffffff −
text-secondary #3f3f46 −
brand-active #27272a −
link #0a0a0a −
link-hover #3f3f46 −
destructive #ef4444 −
destructive-hover #dc2626 −
destructive-foreground #fafafa −
input #e4e4e7 −
input-border #e4e4e7 −
ring #0a0a0a −
shadow-color rgba(0, 0, 0, 0.05) −
shadow-color-md rgba(0, 0, 0, 0.1) −
shadow-color-lg rgba(0, 0, 0, 0.15) −
chart-1 #e76e50 −
chart-2 #2a9d90 −
chart-3 #274754 −
chart-4 #e8c468 −
chart-5 #f4a462 typography 5 changed
~
display {"family":"Geist","size":56} → {"family":"Cahuenga","size":56} ~
h1 {"family":"Geist","size":40} → {"family":"Cahuenga","size":40} ~
h2 {"family":"Geist","size":32} → {"family":"Cahuenga","size":32} ~
body {"family":"Geist","size":16} → {"family":"Spectral","size":19} ~
label {"family":"Geist Mono","size":14} → {"family":"Monaco","size":13} radius 1 changed
~
button 8px → 6px spacing identical
No differences.