GitHub Copilot vs OpenAI
56 token-level differences between these two design systems.
Background
#ffffff → #ffffff Text
#1f2328 → #000000 Brand
#000000 → #000000 Border
#d0d7de → rgba(0,0,0,0.1) Display font
Mona Sans → OpenAI Sans Body size
18px → 16px colors 49 changed
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surface #f6f8fa → #fafafa ~
text #1f2328 → #000000 ~
text-muted #59636e → #5d5d5d ~
text-subtle #6e7781 → #8e8e8e ~
text-on-dark #f0f6fc → #ededed ~
brand-hover #1f2328 → #1a1a1a ~
brand-active #3d444d → #2c2c2c ~
accent #0969da → #10a37f ~
accent-hover #0550ae → #0d8a6b ~
accent-soft #ddf4ff → #d6f3e8 ~
success #1a7f37 → #10a37f ~
warning #9a6700 → #d97706 ~
warning-soft #fff8c5 → #fdf3e7 ~
danger #cf222e → #cc2525 ~
danger-soft #ffebe9 → #fae5e5 ~
border #d0d7de → rgba(0,0,0,0.1) ~
border-strong #afb8c1 → rgba(0,0,0,0.16) ~
scrim rgba(140,149,159,0.15) → rgba(0,0,0,0.5) +
bg-soft #f1f1f1 +
bg-section #f7f7f7 +
surface-card #ffffff +
surface-hover rgba(0,0,0,0.04) +
surface-press rgba(0,0,0,0.08) +
text-faint #b4b4b4 +
text-on-brand #ffffff +
link #000000 +
link-hover #5d5d5d +
link-visited #000000 +
border-soft rgba(0,0,0,0.08) +
shadow-card rgba(0,0,0,0.06) +
shadow-elev rgba(0,0,0,0.10) +
shadow-modal rgba(0,0,0,0.20) +
info #3a3a3a −
bg-inverse #0d1117 −
bg-overlay #ffffffee −
surface-strong #eaeef2 −
surface-on-dark #161b22 −
surface-strong-on-dark #21262d −
text-on-dark-muted #9198a1 −
brand-on-dark-hover #f0f6fc −
accent-emphasis #0969da −
accent-on-dark #4493f8 −
success-soft #dafbe1 −
done #8250df −
border-muted #d8dee4 −
border-on-dark #3d444d −
shadow-small rgba(31,35,40,0.04) −
shadow-medium rgba(31,35,40,0.08) −
shadow-large rgba(31,35,40,0.12) typography 5 changed
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display {"family":"Mona Sans","size":96} → {"family":"OpenAI Sans","size":48} ~
h1 {"family":"Mona Sans","size":64} → {"family":"OpenAI Sans","size":40} ~
h2 {"family":"Mona Sans","size":56} → {"family":"OpenAI Sans","size":32} ~
body {"family":"Mona Sans","size":18} → {"family":"OpenAI Sans","size":16} ~
label {"family":"MonaspiceNe","size":12} → {"family":"OpenAI Sans Mono","size":12} radius identical
No differences.
spacing 2 changed
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lg 40px → 32px ~
xl 64px → 48px