angular.dev is built on a pure-white canvas (rgb(255,255,255)).
The system uses rgb(21, 20, 23) as a near-neutral accent (low saturation).
Crisp CTAs (4px radius) reinforce a precise, technical aesthetic alongside Inter Tight 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 — 7 keyframe animations plus transition-driven interactions.
01
Color — roles, semantics & the full census
10 colors measured · click any swatch to copy
Canvas
#ffffff
AAA 18.88:1
Ink
#111111
AAA 18.88:1
Accent
#151417
AAA 18.35:1
Line
#24292e
AAA 14.67:1
Semantic states
No semantic state colors detected — this system signals state through weight & motion, not hue.
10 colors mined from the live renderexpand
02
Type — the ladder, in the real face
6 roles · rendered live in the real Inter (captured woff2) · lines are editable, click any spec to copy
display xl
display-xl80px · 500
display md
display-md16px · 500 · ×5.00
body
body12.8px · 500 · ×1.25
caption
caption14.4px · 500 · ×0.89
button
button14px · 600 · ×1.03
mono
mono16px · 400 · ×0.88
04
Depth — elevation is extracted, not invented
3 box-shadows measured on the live page · click a tile to copy its raw value
shadow-1
shadow-2
shadow-3
05
Motion — easings, transitions & live keyframes
2 easing curves · 7 keyframes · hover a tile to preview
14 component families · 63 variants counted on the live DOM
Component
Variants found
links
×10
code Block
×10
buttons
×8
cards
×7
nav Links
×4
tabs
×4
heading H2
×4
heading H3
×4
badges
×3
inputs
×2
status Badge
×2
footer Links
×2
cta Banner
×2
heading H1
×1
Component style specs (§4)expand
Buttons
Dark / Solid
Background: #151417{colors.primary}
Text: #ffffff{colors.on-primary}
Padding: 8px
Radius: 4px
Border: 1px solid oklch(0.6902 0.277 332.77)
Font: 14px weight 600
Use: Solid dark CTA
Focus: outline: rgb(16, 16, 16) auto 1px
Outline
Background: transparent
Text: #746e7c
Padding: 1px 6px
Radius: 4px
Border: 1px solid oklch(0.9175 0.004 301.42)
Font: 12.8px weight 500
Use: Secondary action with border
Focus: outline: rgb(16, 16, 16) auto 1px
Ghost
Background: transparent
Text: #746e7c
Padding: 20px 6px
Radius: 0px
Font: 13.3333px weight 500
Use: Subtle action, toolbar, nav button
Focus: outline: rgb(16, 16, 16) auto 1px
Ghost
Background: transparent
Text: #000000
Padding: 1px 16px
Radius: 0px
Font: 13.3333px weight 600
Use: Subtle action, toolbar, nav button
Focus: outline: rgb(16, 16, 16) auto 1px
Light / Invert
Background: #ffffff{colors.on-primary}
Text: #0546ff
Padding: 10px
Radius: 4px
Border: 1px solid oklch(0.9175 0.004 301.42)
Font: 16px weight 500
Use: Bright CTA on dark sections
Focus: outline: rgb(16, 16, 16) auto 1px
Light / Invert
Background: #ffffff{colors.on-primary}
Text: #0546ff
Padding: 32px
Radius: 8px
Border: 1px solid oklch(0.9175 0.004 301.42)
Font: 16px weight 500
Use: Bright CTA on dark sections
Focus: outline: rgb(16, 16, 16) auto 1px
07
Layout — structure & dimensions
4 layout metrics measured
max Width80ch
header Height64px
sidebar Width0px
container Padding0px
08
Responsive — real breakpoints
7 media-query stops read from the live CSS
700px
701px
775px
900px
901px
1431px
1801px
09
Do's & Don'ts
17 enforceable rules pulled verbatim from the spec
Do
Use Primary Contrast (`#151417`) for text — not pure black, it's warmer and more readable
Use Inter as the primary typeface — it defines the brand personality
Keep font weights between 400-600 — the system uses a narrow weight range for subtle hierarchy
Use the extracted shadow patterns for elevation — they are tuned to match the brand palette
Use Primary Contrast (`#151417`) as the primary accent — it's the brand's signature interactive color
Use small 4px radius for buttons — this design system uses subtle rounding, not pill shapes
Respect the 2px–32px spacing range — the design uses a wide scale for visual breathing room
Include a search input directly in the nav — discoverability is a primary UX value here
Include a theme toggle in the nav — dark mode is a first-class feature
Don't
Don't use pure black (`#000000`) for text — the near-black adds warmth
Don't substitute with generic sans-serif or serif — the custom font carries the brand
Don't use weight 700 (bold) or above — 600 is the maximum weight in this system
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 over-round buttons with pill or large radius — the system uses restrained, sharp-ish corners
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 angular.dev design system.
Canvas #ffffff · ink #111111 · accent #151417.
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.