Substack vs GitHub Copilot
61 token-level differences between these two design systems.
Background
#ffffff → #ffffff Text
#363737 → #1f2328 Brand
#ff6719 → #000000 Border
rgba(0, 0, 0, 0.10) → #d0d7de Display font
Cahuenga → Mona Sans Body size
19px → 18px colors 53 changed
~
surface #ffffff → #f6f8fa ~
text #363737 → #1f2328 ~
text-strong #1a1a1a → #000000 ~
text-muted #878787 → #59636e ~
brand #ff6719 → #000000 ~
brand-hover #e85412 → #1f2328 ~
border rgba(0, 0, 0, 0.10) → #d0d7de ~
border-strong rgba(0, 0, 0, 0.20) → #afb8c1 ~
success #0d8050 → #1a7f37 ~
warning #d97706 → #9a6700 ~
danger #dc2626 → #cf222e ~
shadow-medium rgba(0, 0, 0, 0.10) → rgba(31,35,40,0.08) +
bg-inverse #0d1117 +
bg-overlay #ffffffee +
surface-strong #eaeef2 +
surface-on-dark #161b22 +
surface-strong-on-dark #21262d +
text-subtle #6e7781 +
text-on-dark #f0f6fc +
text-on-dark-muted #9198a1 +
brand-active #3d444d +
brand-on-dark #ffffff +
brand-on-dark-hover #f0f6fc +
accent #0969da +
accent-hover #0550ae +
accent-soft #ddf4ff +
accent-emphasis #0969da +
accent-on-dark #4493f8 +
success-soft #dafbe1 +
warning-soft #fff8c5 +
danger-soft #ffebe9 +
done #8250df +
border-muted #d8dee4 +
border-on-dark #3d444d +
scrim rgba(140,149,159,0.15) +
shadow-small rgba(31,35,40,0.04) +
shadow-large rgba(31,35,40,0.12) −
bg-elev #fafaf7 −
bg-cream #fbf9f4 −
bg-soft #f6f6f3 −
surface-warm #fafaf7 −
text-soft #666c70 −
text-faint #a8a8a8 −
text-link #363737 −
brand-deep #cc4a0e −
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) −
info #2563eb −
shadow-soft rgba(0, 0, 0, 0.06) −
reading-rule rgba(0, 0, 0, 0.08) typography 5 changed
~
display {"family":"Cahuenga","size":56} → {"family":"Mona Sans","size":96} ~
h1 {"family":"Cahuenga","size":40} → {"family":"Mona Sans","size":64} ~
h2 {"family":"Cahuenga","size":32} → {"family":"Mona Sans","size":56} ~
body {"family":"Spectral","size":19} → {"family":"Mona Sans","size":18} ~
label {"family":"Monaco","size":13} → {"family":"MonaspiceNe","size":12} radius 1 changed
~
button 6px → 8px spacing 2 changed
~
lg 32px → 40px ~
xl 48px → 64px