Accessible Color Palette Builder

This site helps you generate an accessible color palette color considering the color contrast ratio of 4.5:1 as a minimum standard.

Let's Get Color Blind

An extension that simulates information a color blind person receives and/or adds a color blindness filter.

Adobe Color

A tool from Adobe that in addition to checking the WCAG (version 2.1) AA and AAA contrast displays inappropriate color clashes for colorblind users.

Accessible Color Palette Generator

Discover beautiful color combinations that your whole audience can appreciate and follow Web Content Accessibility Guidelines (WCAG) with ease.

Color Hexa

ColorHexa.com is a free color tool providing information about any color and generating matching color palettes for your designs (such as complementary, analogous, triadic, tetradic or monochromatic colors schemes).

Pa11y

They publish a range of free and open source tools to help designers and developers make their web pages more accessible.

Lighthouse

Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.