Substack vs X
70 token-level differences between these two design systems.
Background
#ffffff → #000000 Text
#363737 → #e7e9ea Brand
#ff6719 → #c6f432 Border
rgba(0, 0, 0, 0.10) → #2f3336 Display font
Cahuenga → TwitterChirp Body size
19px → 15px colors 63 changed
~
bg #ffffff → #000000 ~
surface #ffffff → #16181c ~
text #363737 → #e7e9ea ~
text-strong #1a1a1a → #ffffff ~
text-soft #666c70 → #536471 ~
text-faint #a8a8a8 → #3e4a55 ~
text-muted #878787 → #71767b ~
border rgba(0, 0, 0, 0.10) → #2f3336 ~
border-strong rgba(0, 0, 0, 0.20) → #536471 ~
success #0d8050 → #00ba7c ~
warning #d97706 → #fab421 ~
danger #dc2626 → #f4212e ~
info #2563eb → #1d9bf0 +
bg-light #ffffff +
bg-dim #15202b +
surface-hover #1c1f23 +
surface-elevated #202327 +
surface-soft #0d0d0e +
text-body #e7e9ea +
text-on-brand #ffffff +
text-on-white #0f1419 +
brand-blue #1d9bf0 +
brand-blue-hover #1a8cd8 +
brand-blue-deep #1573b8 +
brand-blue-soft rgba(29,155,240,0.1) +
primary-action #ffffff +
primary-action-hover #d7dbdc +
secondary-action #000000 +
link #1d9bf0 +
link-hover #1a8cd8 +
border-subtle #16181c +
on-bg #e7e9ea +
shadow-color rgba(255,255,255,0.04) +
reply-icon #71767b +
reply-active #1d9bf0 +
retweet-icon #71767b +
retweet-active #00ba7c +
like-icon #71767b +
like-active #f91880 +
share-icon #71767b +
bookmark-icon #71767b +
bookmark-active #1d9bf0 +
verified-blue #1d9bf0 +
verified-gold #fab421 +
verified-grey #829aab +
premium-gold #fab421 +
views-meta #71767b −
bg-elev #fafaf7 −
bg-cream #fbf9f4 −
bg-soft #f6f6f3 −
surface-warm #fafaf7 −
text-link #363737 −
brand #ff6719 −
brand-hover #e85412 −
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) −
shadow-soft rgba(0, 0, 0, 0.06) −
shadow-medium rgba(0, 0, 0, 0.10) −
reading-rule rgba(0, 0, 0, 0.08) typography 5 changed
~
display {"family":"Cahuenga","size":56} → {"family":"TwitterChirp","size":60} ~
h1 {"family":"Cahuenga","size":40} → {"family":"TwitterChirp","size":40} ~
h2 {"family":"Cahuenga","size":32} → {"family":"TwitterChirp","size":32} ~
body {"family":"Spectral","size":19} → {"family":"TwitterChirp","size":15} ~
label {"family":"Monaco","size":13} → {"family":"TwitterChirpMono","size":12} radius 2 changed
~
button 6px → 12px ~
card 12px → 16px spacing identical
No differences.