Color Contrast Checker
Use the contrast checker to compare text and background colors against common WCAG readability thresholds. Enter two colors, check the ratio, then copy or adjust the values until the result is readable.
WCAG contrast
Small text generally needs a ratio of 4.5:1 for AA and 7:1 for AAA. Large text and user interface elements have lower thresholds, but strong contrast is still easier to read.