Color Contrast & WCAG 2.1 AA/AAA Compliance Checker
Calculate contrast ratio (X:1) between text color and background color, with instant pass/fail validation for WCAG 2.1 AA and AAA accessibility standards.
Inputs used by this tool
Enter values in the interactive controls when the page loads. The result depends on the assumptions and units shown for each field.
Input type: text
Input type: text
Data handling varies by tool. Review its notes and the Privacy Policy before entering sensitive information.