Free WCAG Color Contrast Checker
Check whether your foreground and background color combinations meet WCAG 2.1 accessibility standards. See contrast ratios and get pass/fail results for AA and AAA levels.
Make Your Website Accessible to Everyone
Color contrast is one of the most fundamental aspects of web accessibility. Poor contrast makes text difficult or impossible to read for users with visual impairments. This tool helps you verify that your color choices meet WCAG standards, ensuring your content is readable by the widest possible audience.
Frequently Asked Questions
WCAG 2.1 Level AA requires a minimum contrast ratio of 4.5:1 for normal text and 3:1 for large text (18px+ bold or 24px+ regular). Level AAA requires 7:1 for normal text and 4.5:1 for large text.
Yes. The checker accepts colors in HEX, RGB, and HSL formats. You can also use the color picker to select colors visually. The contrast ratio updates in real time as you adjust either color.