Color Contrast Checker
WCAGCalculate WCAG 2.1 contrast ratios and verify accessibility compliance for normal text, large text, and UI components.
Normal Text
Body text, labels (< 18pt)
Large Text
Headings (≥ 18pt or 14pt bold)
UI Components
Buttons, borders, icons
Live Visual Preview
The quick brown fox jumps over the lazy dog.
Good typography requires adequate contrast to ensure effortless reading comprehension across digital displays under various ambient lighting conditions.
How It Works
The Web Content Accessibility Guidelines (WCAG 2.1) require sufficient contrast between text and its background to ensure readability for users with low vision or color vision deficiencies.
- Level AA (Minimum): Requires a contrast ratio of at least 4.5:1 for normal text and 3.0:1 for large text (18pt / 24px regular, or 14pt / 18.66px bold) and user interface components.
- Level AAA (Enhanced): Requires a contrast ratio of at least 7.0:1 for normal text and 4.5:1 for large text.
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