tailwindcss.com is built on a pure-white canvas (rgb(255,255,255)).
The system uses rgb(247, 55, 153) as the high-saturation accent for primary actions.
Generously rounded CTAs (16px) suggest approachable, content-first design alongside inter as the primary typeface.
Inter is paired with inter Fallback for secondary roles.
A layered elevation system (17 distinct shadows) building a clear front-to-back hierarchy.
Motion is a first-class concern — 5 keyframe animations plus transition-driven interactions.
01
Color — roles, semantics & the full census
1 colors measured · click any swatch to copy
Canvas
#ffffff
AAA 18.88:1
Ink
#111111
AAA 18.88:1
Accent
#f73799
AA·lg 3.52:1
Line
#e5e7eb
Fail 1.24:1
Semantic states
No semantic state colors detected — this system signals state through weight & motion, not hue.
02
Type — the ladder, in the real face
4 roles · system fallback — no woff2 captured · lines are editable, click any spec to copy
12 enforceable rules pulled verbatim from the spec
Do
Use inter as the primary typeface — it defines the brand personality
Use negative letter-spacing (-4.8px) at display sizes for compressed, editorial headlines
Use the extracted shadow patterns for elevation — they are tuned to match the brand palette
Use #f73799 (`#f73799`) as the primary accent — it's the brand's signature interactive color
Use 8px border-radius on buttons — the standard corner rounding for interactive elements
Transition button background to Jet Black (`#030712`) on hover — this is the extracted interactive state
Respect the 4px–76px spacing range — the design uses a wide scale for visual breathing room
Don't
Don't substitute with generic sans-serif or serif — the custom font carries the brand
Don't increase letter-spacing on headings — the type is designed to run tight at scale
Don't invent new shadow values — use only the extracted shadow levels
Don't introduce additional saturated accent colors — the palette is intentionally controlled
Don't use opacity or brightness filter for button hover — the design uses an explicit background color change
10
Agent guide & export
Paste-ready prompt + the real files behind this page
Build a UI in the tailwindcss.com design system.
Canvas #ffffff · ink #111111 · accent #f73799.
Type: inter — respect the size/weight ladder in §3.
Radius, spacing, shadow: use only the extracted scales (no magic numbers).
Full spec follows — paste the DESIGN.md below into your agent.