All you have to do is enter a background color, and determine the styling of your text. The site will determine whether your contrast ratio is compliant.

Check your color choices to see if your contrast is accessible.

Check an existing PDF for accessibility.

"WAVE is a suite of evaluation tools that helps authors make their web content more accessible to individuals with disabilities. WAVE can identify many accessibility and Web Content Accessibility Guideline (WCAG) errors, but also facilitates human evaluation of web content. Our philosophy is to focus on issues that we know impact end users, facilitate human evaluation, and to educate about web accessibility."

Check the accessibility of a Microsoft Word document

This guide provides a variety of resources surrounding accessibility, including guidelines, compliance, and more.