storybook.js.org is built on a pure-white canvas (rgb(255, 255, 255)).
The system uses rgb(255, 255, 255) as the singular interactive color.
Sharp 0px corners on CTAs — architectural restraint, engineering precision alongside __Nunito_Sans_ee04dc as the primary typeface.
A restrained elevation system (3 distinct shadows) — shadows reserved for the few elements that must lift off the page.
Motion is a first-class concern — 9 keyframe animations plus transition-driven interactions.
01
Color — roles, semantics & the full census
78 colors measured · click any swatch to copy
Canvas
#ffffff
AAA 18.88:1
Ink
#111111
AAA 18.88:1
Accent
#ffffff
Fail 1:1
Line
#ffffff
Fail 1:1
Semantic states
No semantic state colors detected — this system signals state through weight & motion, not hue.
78 colors mined from the live renderexpand
02
Type — the ladder, in the real face
5 roles · rendered live in the real Inter (captured woff2) · lines are editable, click any spec to copy
15 enforceable rules pulled verbatim from the spec
Do
Use the extracted shadow patterns for elevation — they are tuned to match the brand palette
Use full-pill radius (9999px) only for specific elements (avatars, pills, toggles)
Use Pure White (`#ffffff`) as the primary accent — it's the brand's signature interactive color
Use 6px border-radius on buttons — the standard corner rounding for interactive elements
Style form inputs with a `1px solid rgb(228, 228, 231)` border — use border-based inputs, not floating labels or underline-only
Make the hero full-viewport (≥70% screen height) — this design uses an immersive hero, not a tall navbar
Include exactly 3 CTAs in the hero (primary + secondary) — this design pattern is multi-action, not single-purpose
Lay out testimonials in a grid (4+ items) — quantity signals scale and trust
Include a newsletter signup in the footer — email capture is part of the conversion funnel
Don't
Don't invent new shadow values — use only the extracted shadow levels
Don't apply pill radius on rectangular buttons or cards — it's reserved for specific interactive elements
Don't introduce additional saturated accent colors — the palette is intentionally controlled
Don't remove the input border — the border is the primary affordance indicator for form fields
Don't make the nav sticky — this design lets it scroll away to maximize content focus
Don't put a CTA button in the nav — this design uses links only at the top
10
Agent guide & export
Paste-ready prompt + the real files behind this page
Build a UI in the storybook.js.org design system.
Canvas #ffffff · ink #111111 · accent #ffffff.
Type: __Nunito_Sans_ee04dc — 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.