Two-Color Contrast Checker
Check WCAG contrast between any foreground and background HEX colors.
Runs in your browser. Nothing you enter is sent to our servers.
Result
Enter your details and select Run tool.
How to use this tool
Enter the exact foreground and background HEX values to get their WCAG relative luminance contrast ratio, including normal and large text AA checks and normal text AAA. This differs from our color converter, which previews only black or white text against a chosen color.
Questions and answers
What counts as large text?
WCAG uses at least 18pt regular or 14pt bold in its large-text contrast threshold.
Does passing this tool make a whole site accessible?
No. Text contrast is only one of many accessibility requirements.