DESIGN.md for Codex

A practical visual context layer for Codex implementation work.

CursorClaude CodeCodexGoogle Stitch

561 copies357 saves168 downloads

Added by

dimabraven

May 8, 2026

View original

Tags

learncodexguidearticle

# DESIGN.md for Codex
## Product feel
A practical visual context layer for Codex implementation work.
Build for a Practical, Editorial, Clear visual taste. Keep density practical, typography strong, and layouts easy for AI agents to repeat.
## Color direction
- Primary text: #0f172a
- Accent / interactive: #8b5cf6
- Surface: #eef2ff
- Border / separators: #c4b5fd
## Typography
- Use a modern sans for body copy and a sharper display face for hero/page titles.
- Titles should feel deliberate, not shouty. Avoid oversized marketing fluff.
- Meta text should stay compact and quiet.
## Layout rules
- Prefer light UI by default.
- Use compact spacing and card grids that still feel breathable.
- Keep navigation practical: search first, then filters, then actions.
- This entry belongs to the "devtools" lane.
## Components
- Buttons: slightly rounded, clear hierarchy, only one primary CTA per section.
- Cards: soft border, useful metadata, preview-first composition.
- Empty states: helpful, never dead.
- Code panels: mono, dense, copy-friendly.
## Agent rules
- Do not generate generic Tailwind marketing blocks.
- Respect the palette and keep component states consistent.
- Optimize for these tools: Cursor, Claude Code, Codex, Google Stitch.
## Accessibility
- Preserve contrast for text and controls.
- Use visible focus states.
- Avoid relying on color alone for meaning.
## License
Public source

Color Palette

TEXT

#0f172a

ACCENT

#8b5cf6

SURFACE

#eef2ff

BORDER

#c4b5fd

Typography

display

4.5rem / 600 / 1.04

The quick brown fox

heading-lg

3rem / 700 / 1.07

The quick brown fox

heading

2rem / 600 / 1.1

The quick brown fox jumps

heading-sm

1.25rem / 600 / 1.2

The quick brown fox jumps

body

1rem / 400 / 1.5

The quick brown fox jumps over the lazy dog

caption

0.75rem / 400 / 1.5

The quick brown fox jumps over the lazy dog

Design Tokens

Spacing

space-14px

space-28px

space-312px

space-416px

space-624px

space-832px

space-1248px

space-1664px

Border Radius

radius-none0px

radius-sm4px

radius-md8px

radius-lg16px

radius-xl24px

radius-full9999px

Elevation

Flatshadow-none

XSshadow-xs

SMshadow-sm

MDshadow-md

LGshadow-lg

XLshadow-xl

Related DESIGN.md files

Figma

Collaborative design tool. Clean, product-forward SaaS.

Inngest

Event-driven functions platform. Clean developer UI.

Fly.io

Run apps close to users. Dark terminal aesthetic.

v0 by Vercel

AI UI generator. Dark, minimal, Vercel aesthetic.

Framer

Design and publish websites. Dark premium, motion-first.

Trigger.dev

Background jobs for developers. Dark minimal devtool.

Turso

Edge-native SQLite. Dark, minimal, developer-brand.

Lovable

AI app builder. Clean, modern, product-led.

FAQ

Can I use this with Cursor or Claude Code?

Yes. Copy the DESIGN.md into your project root and ask the agent to follow it.

Is this official?

No — this is an independent reference.

How do I add this to my project?

Copy the markdown into a DESIGN.md file in your repo root and mention it in your agent prompt.