An open-source project to generate, verify, and distribute color themes using color science — and a universal theme format any application can consume.

🌐 gamut.style (coming soon)

What is this?

Most color themes are hand-made and unverified. GAMUT generates themes in perceptually uniform color space (OKLCH) and subjects every one to hard, machine-checkable quality gates:

Readability — APCA contrast minimums for every foreground/background pair
Distinguishability — minimum ΔE-OK separation between all accent colors
Colorblind safety — accent separation verified under simulated protanopia, deuteranopia, and tritanopia (Machado 2009)
Coherence — monotonic lightness ramps, bounded accent lightness/chroma

Themes that pass earn badges (aa-readable, cvd-safe, coherent, ...) embedded in the theme file itself — verifiable by anyone, not marketing claims.

One GAMUT theme file exports to many targets: VS Code, base16/base24 (Tinted Theming), WezTerm, Alacritty, Ghostty, Kitty, CSS custom properties, and more.

Repository contents

File	Purpose
SPEC.md	The GAMUT theme format specification (v0.1 draft)
REQUIREMENTS.md	Product requirements for the site & pipeline
theme.schema.json	JSON Schema for `.theme.json` files
example.ember-dusk.theme.json	Worked example theme, generated and verified
tools/generate_example.py	Prototype generator: OKLCH expansion, APCA, ΔE-OK, CVD simulation

Quick start

pip install coloraide
python3 tools/generate_example.py   # regenerates the example theme + gate report

Status

Early design phase. The format spec, schema, and generator prototype work; the generation pipeline at scale, site, and exporters are next.

Roadmap (short version): scale the generator → ~100 themes → preview page at gamut.style → exporters → 1,000-theme catalog → public API/CDN.

Architecture (planned)

Frontend application + QQQ backend, deployed on Kubernetes. Theme catalog generated offline by the Python pipeline; themes served as immutable JSON from cdn.gamut.style.

Licensing

Code: MIT
Theme format specification: CC-BY-4.0
Published themes: CC0-1.0 (public domain)