Color Contrast Checker

How does it work?

This tool follows the web content accessibility guidelines (WCAG), which are a series of recommendations for making the web more accessible. Regarding colors, the standard defines two levels of contrast ratio: AA (minimum contrast) and AAA (enhanced contrast). The level AA requires a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text (at least 18pt) or bold text. The level AAA requires a contrast ratio of at least 7:1 for normal text and 4.5:1 for large text or bold text.