Passes WCAG

Evaluate whether two colors have sufficient contrast to pass WCAG requirements.

Doesn't handle transparency as of yet.

Installation

npm i passes-wcag

Usage

import {
  passesWcagAaLargeText,
  passesWcagAa,
  passesWcagAaa,
} from 'passes-wcag';
 
passesWcagAa('black', '#fff'); // true
passesWcagAaLargeText('rgb(1, 1, 1)', 'rgb(250, 248, 247)') // true
passesWcagAaa('black', 'rgb(0, 0, 0)') // false

Signature

passesWcagAaLargeText(color1: string, color2: string) => boolean
passesWcagAa(color1: string, color2: string) => boolean
passesWcagAaa(color1: string, color2: string) => boolean

Contributing

I appreciate your issues and PRs on Github!

Testing

yarn build && yarn test

Releasing

This project uses np.

1. Make sure your changes are in master
2. Run yarn release
3. Follow the interactive release guide