Color Contrast Checker
Ensure your web content is accessible to everyone with our color contrast checker. Test text and background color combinations against WCAG accessibility standards, simulate how colors appear to people with color blindness, and get suggestions for accessible alternatives. No Signup Required.
Color Contrast Checker
Create accessible color combinations with confidence
Preview
Normal Text
This is an example of normal body text that would appear on your website or application.
Large Text
This is an example of large text (18pt or 14pt bold).
"Good design is accessible design. Contrast is essential for readability."
Contrast Ratio
19.00:1
0
SCORE
Normal Text
AAA
Large Text
AAA
WCAG 2.1 Guidelines: AA requires 4.5:1 for normal text, 3:1 for large text. AAA requires 7:1 for normal text, 4.5:1 for large text.
Tips & Suggestions
- ✦Maintain a contrast ratio of at least 4.5:1 for normal text.
- ✦Use 3:1 or higher for large text (18pt or 14pt bold).
- ✦Consider using darker text on lighter backgrounds or vice versa.
- ✦For full WCAG AAA compliance, aim for a ratio of 7:1.
- ✦Adjust brightness or saturation slightly to improve contrast.
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Did You Know?
The human eye can distinguish approximately 10 million different colors, yet about 8% of men and 0.5% of women worldwide have some form of color vision deficiency. This is why color contrast isn't just an accessibility feature—it's essential for effective communication. The first formal color contrast guidelines were only established in 1999, despite digital interfaces existing for decades before.
Technical Insight
Many countries now legally require websites to meet accessibility standards, including proper color contrast. The European Accessibility Act, ADA in the United States, and similar laws worldwide have made accessibility not just good practice but a legal requirement. Organizations that ignore these standards have faced significant lawsuits, with legal cases related to web accessibility increasing by over 300% since 2018.