Audit Tool
Contrast Checker
Professional-grade WCAG 2.1 auditing for high-performance design systems. Verify text, UI components, and graphical objects with precision.
Contrast Ratio
Normal Text
Large Text
Large Text Preview
Better design through perceptual science.
The Contrast Checker allows you to verify that your UI components are readable by everyone, including people with low vision deficiencies.
UI Component Preview
Active Input State
WCAG 2.1 Breakdown
Normal Text
AARequired ratio of 4.5:1 for body copy and text under 18pt (24px).
Large Text
AARequired ratio of 3:1 for text larger than 18pt (24px) or bold text larger than 14pt (18.67px).
Components
AARequired ratio of 3:1 for UI elements like borders, icons, and focus indicators.