Reasonable Colors
Open-source color system for accessible color palettes
Reasonable Colors launched on April 19, 2022 with 82 votes, #419 of 2,974 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 4 years on.
What it does
Reasonable Colors is an open-source color system for building accessible, nice-looking color palettes. It was purpose-built for creating accessible, high-contrast color combinations.
Reasonable Colors is an open-source color system that makes it easy to build accessible, nice-looking color palettes.
The annotated source-code is available on Github (mirrored on Gitlab ) and released under the MIT license . Anyone can use these colors for anything. The color system was purpose-built for creating accessible, high-contrast color combinations. It's simple to use Reasonable Colors to meet WCAG 2 contrast recommendations . Each color comes in 6, numbered shades. The contrast between any two shades can be inferred by the difference between their shade numbers. The contrast between any shades with a difference of 2 (shade-2 and shade-4, for example) will be at least 3:1. The contrast between any shades with a difference of 3 (shade-2 and shade-5, for example) will be at least 4.5:1. The…from reasonable.work
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