Use TPGi's free colour contrast checker to optimize your content - including text and visual elements - for individuals with color-blindness or low vision impairments.

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

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.

TPGi’s on-demand single-page accessibility testing tool. Use it to remediate failures surfaced in ARC Monitoring scans or as a QA tool.

Evaluate web accessibility within your browser. WAVE is a web accessibility evaluation tool developed by WebAIM.org.

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