Colour contrast checker to check for accessibility issues.

The WAVE Chrome, Firefox, and Edge extensions allows you to evaluate web content for accessibility issues directly within your browser.

Robust, efficient and accurate accessibility testing tools for all Built on the world’s most popular accessibility testing library, axe-core. Deque’s suite of axe tools offers full coverage for your testing and compliance needs.

A tool for making custom branded color palettes for web and UI design that are built from the ground up to meet WCAG contrast accessibility guidelines

An open-source, automated tool to help you improve the quality of web pages. You can run it on any web page, public or requiring authentication.

aDesigner is a disability simulator that helps designers ensure that their content and applications are accessible and usable by the visually impaired.