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Find out if your website is Accessible and Compliant
Our free ADA and WCAG compliance checker identifies web accessibility issues and gives exact instructions for fixing them.
How it works
We evaluate your color combination using the WCAG 2.0 guidelines for contrast accessibility.
If your combination does not meet the guidelines, we find the closest accessible combination by modifying the color lightness.
We modify the lightness value only, in order to stay as true to the original color as possible.
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc. If you wish to validate specific content such as RSS/Atom feeds or CSS stylesheets, MobileOK content, or to find broken links, there are other validators and tools available. As an alternative you can also try our non-DTD-based validator.