Contrast Checker
Ensure your color combinations are accessible and meet WCAG guidelines.
Background Color
Colors
Text Color
Colors
Preview & Analysis
Aa
The quick brown fox jumps over the lazy dog.
Normal Text
Large Text
AI Contrast Fix Suggestions
Suggests background & text tweaks to reach WCAG targets.
Log in to unlock 3 free AI tries
Ready to suggest tweaks for AA/AAA.
Suggested pairs
Shortest hop that clears WCAG AA/AAA.
Understanding Contrast Ratios
4.5:1 (Level AA)
The minimum required contrast ratio for normal text to be considered accessible under WCAG 2.1 Level AA. For large text, the requirement is lower at 3.0:1. This is the standard target for most web content.
7.0:1 (Level AAA)
The "gold standard" for accessibility. Achieving a 7.0:1 ratio ensures that your text is readable even for people with significant vision loss. For large text, the AAA requirement is 4.5:1.
What counts as Large Text?
WCAG defines large text as anything 18pt (approx. 24px) or larger, or 14pt (approx. 18.66px) and bold or larger. Most headings fall into this category.
Why it matters
Proper contrast is essential for everyone, but especially for people with color blindness, low vision, or those viewing screens in bright sunlight.