DayOS
A high-contrast, editorial dark-canvas interface built around oversized condensed display type (Suisse Intl Condensed at up to 130px) and crisp white surfaces. The system reads as a confident, design-forward B2B product launch — near-black page floor, white modal and card surfaces with generous corner radii (24–48px), a single electric-yellow brand accent for the marquee CTA, and a small pastel accent palette (mint, green, pink, plum) reserved for product/illustration moments. Voltage comes almost entirely from the giant condensed headlines and the scarce yellow, not from color density.
Works with
Claude Code·Cursor·Codex·Gemini CLI·Copilot·v0·Lovable·Bolt·Windsurf·Replit
Color Palette
Accent
Neutrals
Typography
display-xl
130px · 700 · 0.9
The quick brown fox jumps
display-lg
80px · 700 · 0.9
The quick brown fox jumps
display-md
48px · 700 · 0.9
The quick brown fox jumps
body
20px · 400 · 1.2
The quick brown fox jumps
button
14px · 500 · 1.3
The quick brown fox jumps
Spacing & Shape
Spacing
| Name | Value | Preview |
|---|---|---|
| xxs | 4px | |
| xs | 8px | |
| sm | 12px | |
| md | 16px | |
| lg | 24px | |
| xl | 32px | |
| xxl | 40px | |
| block | 46px | |
| section | 64px | |
| section-lg | 83px | |
| section-xl | 96px |
Border Radius
| Name | Value | Preview |
|---|---|---|
| none | 0 | |
| xs | 4px | |
| sm | 8px | |
| md | 10px | |
| lg | 12px | |
| xl | 20px | |
| xxl | 24px | |
| xxxl | 32px | |
| huge | 48px | |
| giant | 64px |
FAQ
- What colors does DayOS use?
- DayOS's core palette includes #000000, #212121, #2f2f2f, #ffffff, #f3f3f3. The full color set with usage roles (canvas, ink, surfaces, accent, semantic) is documented in the DayOS DESIGN.md.
- What font does DayOS use?
- DayOS's primary typeface is SuisseIntlCond. The complete type scale (sizes, weights, line-height and letter-spacing per role), with an open substitute where the original is licensed, is documented in the DESIGN.md.
- What is the DayOS design system?
- A high-contrast, editorial dark-canvas interface built around oversized condensed display type (Suisse Intl Condensed at up to 130px) and crisp white surfaces. The system reads as a confident, design…