Contrast Ratio Checker — developer utilities, encoders and data format tools
The Contrast Ratio Checker compares a text color and a background color and reports the WCAG contrast ratio together with AA and AAA pass or fail results for normal and large text. Designers and accessibility reviewers use it to make sure text stays readable for people with low vision. The ratio is
Category: Developer Tools
About this tool
What Is Contrast Ratio Checker? Contrast Ratio Checker The Contrast Ratio Checker compares a text color and a background color and reports the WCAG contrast ratio together with AA and AAA pass or fail results for normal and large text. Designers and accessibility reviewers use it to make sure text stays readable for people with low vision. The ratio is computed locally from the two colors you enter.. How to Use Make sure you understand the formula or method this tool uses. Enter your values in the correct fields with compatible units. Review the result, compare it with expected values, and use the related tools if needed. Related Tools JSON Validator & Formatter — Validate JSON and format it into a readable tree Regex Tester — Test and debug regular expressions with highlighted matches Hash Generator — Generate MD5, SHA-1, SHA-256 hashes for text Frequently Asked Questions How do I use Contrast Ratio Checker? Enter the required data in the appropriate fields and the tool will display the result immediately.