Free Online Color Contrast Checker & WCAG Accessibility Tool

Ensure your digital designs are inclusive and meet WCAG 2.1 standards with real-time contrast validation and visual simulation.

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In-Memory History

No recent colors saved yet.
Live Preview Simulation

Sample Heading

Ensuring that text is readable and visually distinct helps people with visual impairments navigate your interface more effectively.

Standard UI Text
Contrast Ratio
4.50:1
NORMAL TEXT AA Pass
LARGE TEXT AA Pass
NORMAL TEXT AAA Pass
LARGE TEXT AAA Pass

WCAG Compliance Thresholds

Level AA requires a ratio of at least 4.5:1 for normal text and 3:1 for large text. Level AAA requires 7:1 for normal text and 4.5:1 for large text. Large text is defined as 18pt or 14pt bold.

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