Contrast Checker
Check color contrast ratios for accessibility. Ensure your text meets WCAG AA or AAA guidelines for normal and large text.
Large text (18px bold)
The quick brown fox jumps over the lazy dog.
Normal text (14px)
The quick brown fox jumps over the lazy dog. 0123456789
Contrast ratio
21:1
WCAG AA
WCAG AAA
Why Color Contrast Matters
Sufficient contrast between text and background is essential for readability and accessibility. Users with low vision, color blindness, or those viewing content in bright sunlight rely on strong contrast to read your content comfortably.
WCAG Guidelines
WCAG (Web Content Accessibility Guidelines) defines minimum contrast ratios: 4.5:1 for normal text (AA), 3:1 for large text (AA), 7:1 for normal text (AAA), and 4.5:1 for large text (AAA). Large text is 18px+ regular or 14px+ bold.