Contrast Checker

Check the WCAG 2.1 contrast ratio between a text color and its background. It reports the exact ratio, plus whether that ratio clears the AA and AAA thresholds for normal-size text. Large text has lower thresholds, so a pair marked as falling short here can still clear the bar for a heading. A ratio is one input to whether text is readable — size, weight and spacing matter too, and this checks one colour pair rather than your page.