Cal.com vs Substack
59 token-level differences between these two design systems.
Background
#f4f4f4 → #ffffff Text
#111111 → #363737 Brand
#111111 → #ff6719 Border
rgba(0, 0, 0, 0.08) → rgba(0, 0, 0, 0.10) Display font
Cal Sans → Cahuenga Body size
16px → 19px colors 50 changed
~
bg #f4f4f4 → #ffffff ~
bg-soft #fafafa → #f6f6f3 ~
text #111111 → #363737 ~
text-strong #000000 → #1a1a1a ~
text-soft #6b7280 → #666c70 ~
text-muted #898989 → #878787 ~
text-faint #9ca3af → #a8a8a8 ~
brand #111111 → #ff6719 ~
border rgba(0, 0, 0, 0.08) → rgba(0, 0, 0, 0.10) ~
border-soft #f3f4f6 → rgba(0, 0, 0, 0.06) ~
border-strong #e5e7eb → rgba(0, 0, 0, 0.20) +
bg-elev #fafaf7 +
bg-cream #fbf9f4 +
surface-warm #fafaf7 +
text-link #363737 +
brand-hover #e85412 +
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) +
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) −
surface-soft #f8f9fa −
surface-card #f5f5f5 −
surface-strong #e5e7eb −
surface-dark #101010 −
surface-dark-elev #1a1a1a −
text-body #374151 −
brand-active #242424 −
brand-disabled #e5e7eb −
on-dark #ffffff −
on-dark-soft #a1a1aa −
link #0000ee −
link-visited #551a8b −
link-hover #0000aa −
brand-accent #3b82f6 −
badge-orange #fb923c −
badge-pink #ec4899 −
badge-violet #8b5cf6 −
badge-emerald #34d399 −
semantic-success #10b981 −
semantic-warning #f59e0b −
semantic-danger #ef4444 −
semantic-info #3b82f6 typography 5 changed
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display {"family":"Cal Sans","size":64} → {"family":"Cahuenga","size":56} ~
h1 {"family":"Cal Sans","size":36} → {"family":"Cahuenga","size":40} ~
h2 {"family":"Cal Sans","size":28} → {"family":"Cahuenga","size":32} ~
body {"family":"Inter","size":16} → {"family":"Spectral","size":19} ~
label {"family":"JetBrains Mono","size":11} → {"family":"Monaco","size":13} radius 2 changed
~
button 8px → 6px ~
card 20px → 12px spacing 2 changed
~
lg 48px → 32px ~
xl 96px → 48px