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Reasonable Colors
Image & DesignOpen SourceColor Palette Generator
Open-source accessible color system for designers and developers.
About
Reasonable Colors is a free, open-source color system designed to help designers and developers create accessible, high-contrast color palettes that meet WCAG 2 standards. It includes 25 named colors, each with 6 shades, where contrast ratios between shades are mathematically predictable. The tool is purpose-built for accessibility compliance, making it ideal for building inclusive digital products.
Problem it solves
Designers and developers struggle to create color palettes that meet accessibility standards while maintaining visual appeal.
Best for
UI/UX designers, web developers, design systems teams, accessibility-focused projects
Key features
25 named colors with 6 numbered shades each
WCAG 2 contrast compliance (AA and AAA standards)
Predictable contrast ratios between shade differences
MIT licensed open-source code on GitHub
Tags
color-systemaccessibilitywcag-compliantopen-sourcedesign-toolsfree
Alternatives
CoolorsAdobe ColorMaterial Design Colors