KAYAK vs Optimism
86 token-level differences between these two design systems.
Background
#ffffff → #ffffff Text
#1e2026 → #000000 Brand
#ff690f → #ff0420 Border
#dadde0 → #e0e0e0 Display font
Open Sans → Optimism Display Body size
14px → 16px colors 73 changed
~
text #1e2026 → #000000 ~
text-body #2c2f36 → #1a1a1a ~
text-muted #5e6470 → #5a5a5a ~
brand #ff690f → #ff0420 ~
brand-hover #e85a07 → #cc0319 ~
brand-active #c54a00 → #a30214 ~
brand-deep #7a3300 → #7d020f ~
link #0066cc → #ff0420 ~
link-hover #004a99 → #cc0319 ~
border #dadde0 → #e0e0e0 ~
border-soft #eaecef → #ebebeb ~
border-strong #a4a9b4 → #c0c0c0 ~
scrim rgba(0,0,0,0.5) → rgba(0,0,0,0.65) +
bg-soft #f5f5f5 +
bg-strong #e6e6e6 +
bg-dark #000000 +
bg-dark-elev #1a1a1a +
bg-dark-deep #0a0a0a +
surface-card #ffffff +
surface-card-soft #f5f5f5 +
text-subtle #8a8a8a +
text-on-dark #ffffff +
text-on-dark-soft #a8a8a8 +
brand-soft #ff04201a +
brand-glow rgba(255,4,32,0.40) +
on-brand #ffffff +
brand-bright #ff3344 +
semantic-up #10b981 +
semantic-down #ef4444 +
semantic-warning #f59e0b +
semantic-info #ff0420 +
gradient-hero linear-gradient(135deg, #000000 0%, #1a1a1a 60%, #7d020f 100%) +
gradient-red linear-gradient(135deg, #ff0420 0%, #cc0319 100%) +
focus-ring rgba(255,4,32,0.45) −
bg-alt #f8f8f8 −
bg-data #f0f3f5 −
surface #ffffff −
surface-soft #f4f4f4 −
surface-strong #e8e8e8 −
surface-orange-soft #fff2e8 −
surface-graph #fdf3eb −
surface-deal #fff2e8 −
text-strong #0a0c10 −
text-soft #8a909d −
text-on-brand #ffffff −
text-on-orange #ffffff −
brand-light #fff2e8 −
brand-graph #ff690f −
brand-graph-fill #fdf3eb −
link-visited #5a4392 −
border-input-focus #ff690f −
divider #dadde0 −
shadow-card rgba(0,0,0,0.06) −
shadow-elev rgba(0,0,0,0.14) −
shadow-deep rgba(255,105,15,0.18) −
success #0a8c3e −
success-soft #e8f6ee −
success-deep #0a6b32 −
warning #d97706 −
warning-soft #fff7e6 −
danger #cc2935 −
danger-soft #fdeaec −
info #0066cc −
info-soft #e8f0f8 −
best-flag #0a8c3e −
cheapest-flag #0a8c3e −
fastest-flag #9333ea −
short-stop-flag #0066cc −
hacker-fare #ff690f −
pricegraph-stroke #ff690f −
pricegraph-fill #fdf3eb −
pricegraph-low #0a8c3e −
pricegraph-high #cc2935 typography 5 changed
~
display {"family":"Open Sans","size":72} → {"family":"Optimism Display","size":72} ~
h1 {"family":"Open Sans","size":40} → {"family":"Optimism Display","size":40} ~
h2 {"family":"Open Sans","size":32} → {"family":"Optimism Display","size":32} ~
body {"family":"Open Sans","size":14} → {"family":"Inter","size":16} ~
label {"family":"SFMono-Regular","size":11} → {"family":"JetBrains Mono","size":11} radius 3 changed
~
button 6px → 12px ~
card 8px → 12px ~
pill 9999px → 999px spacing 5 changed
~
xs 2px → 4px ~
sm 4px → 8px ~
md 12px → 16px ~
lg 24px → 32px ~
xl 40px → 64px