Colour contrast checker to check for accessibility issues.

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

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.

A website for getting different information for colors (different formats, complementary color) , especial a color blindness simulator.

Allows you to easily check the accessibility of any web page directly in Google Chrome, so you can immediately identify issues based on the latest ACT (Accessibility Conformance Testing) rules – with instant feedback and recommendations.

mcp-axe is a MCP-compatible plugin for automated accessibility scanning