Arc vs Substack
68 token-level differences between these two design systems.
Background
#FFFCEC → #ffffff Text
#000000 → #363737 Brand
#2404AA → #ff6719 Border
rgba(0, 0, 0, 0.12) → rgba(0, 0, 0, 0.10) Display font
Marlin Soft SQ → Cahuenga Body size
16px → 19px colors 56 changed
~
bg #FFFCEC → #ffffff ~
surface #FFFFFF → #ffffff ~
text #000000 → #363737 ~
text-strong #000000 → #1a1a1a ~
text-soft rgba(0, 0, 0, 0.6) → #666c70 ~
text-faint rgba(0, 0, 0, 0.45) → #a8a8a8 ~
text-muted rgba(0, 0, 0, 0.3) → #878787 ~
brand #2404AA → #ff6719 ~
brand-deep #1A0388 → #cc4a0e ~
on-brand #FFFCEC → #ffffff ~
border rgba(0, 0, 0, 0.12) → rgba(0, 0, 0, 0.10) +
bg-elev #fafaf7 +
bg-cream #fbf9f4 +
bg-soft #f6f6f3 +
surface-warm #fafaf7 +
text-link #363737 +
brand-hover #e85412 +
brand-tint rgba(255, 103, 25, 0.10) +
brand-tint-strong rgba(255, 103, 25, 0.18) +
border-soft rgba(0, 0, 0, 0.06) +
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) −
bg-secondary #FFF8DC −
surface-elev #FFFEF7 −
text-medium rgba(0, 0, 0, 0.8) −
brand-blue #3139FB −
brand-red #FB3A4D −
brand-coral-soft #FFE3E6 −
cta-bg #FFFFFF −
cta-text #2702C2 −
swatch-pale-green #D7F0D2 −
swatch-salmon #FFD9CF −
swatch-pale-yellow #FFF1A8 −
swatch-soft-blue #D1E2FF −
swatch-lavender #E6DCFF −
link #2404AA −
link-hover #3139FB −
selected-bg rgba(36, 4, 170, 0.08) −
disabled rgba(0, 0, 0, 0.3) −
border-subtle rgba(0, 0, 0, 0.06) −
border-brand rgba(36, 4, 170, 0.30) −
success-bg #D7F0D2 −
success-text #1F4D24 −
warning-bg #FFF1A8 −
warning-text #7A5A00 −
danger-bg #FFE3E6 −
danger-text #A8112A −
info-bg #D1E2FF −
info-text #1A2B6B typography 5 changed
~
display {"family":"Marlin Soft SQ","size":64} → {"family":"Cahuenga","size":56} ~
h1 {"family":"Marlin Soft SQ","size":46} → {"family":"Cahuenga","size":40} ~
h2 {"family":"Marlin Soft SQ","size":36} → {"family":"Cahuenga","size":32} ~
body {"family":"Marlin","size":16} → {"family":"Spectral","size":19} ~
label {"family":"ABC Favorit Mono","size":11} → {"family":"Monaco","size":13} radius 2 changed
~
button 10px → 6px ~
card 16px → 12px spacing 5 changed
~
xs 1px → 4px ~
sm 2px → 8px ~
md 6px → 16px ~
lg 12px → 32px ~
xl 20px → 48px