Color Contrast Checker
Check color contrast ratios for WCAG accessibility compliance. Ensure your text is readable for all users.
Sample Heading
This is sample body text to demonstrate readability at this contrast level.
Small text appears like this
Contrast Ratio
21.00:1
Excellent
WCAG Compliance
AA Normal Text
≥ 4.5:1
AA Large Text
≥ 3:1
AAA Normal Text
≥ 7:1
AAA Large Text
≥ 4.5:1
Why check color contrast?
Good color contrast ensures text is readable for everyone, including people with visual impairments. WCAG guidelines define minimum contrast ratios for accessibility. Meeting these standards also improves usability for all users.
Frequently Asked Questions
What is WCAG contrast ratio?
WCAG (Web Content Accessibility Guidelines) defines minimum contrast ratios for text readability. Level AA requires 4.5:1 for normal text and 3:1 for large text. Level AAA requires 7:1 and 4.5:1 respectively.
What counts as large text?
Large text is defined as 18pt (24px) or larger for regular weight, or 14pt (18.5px) or larger for bold text. Large text has lower contrast requirements because it's easier to read.
Why does accessibility matter?
About 15% of the world's population has some form of disability. Good contrast ensures your content is readable by people with visual impairments, color blindness, or those using screens in bright environments.
How do I fix low contrast?
To increase contrast, make the foreground darker or the background lighter (or vice versa). Our tool shows real-time updates as you adjust colors, making it easy to find accessible combinations.
Is AA or AAA compliance required?
WCAG Level AA is the standard requirement for most websites and is legally mandated in many countries. Level AAA is stricter and recommended for maximum accessibility, especially for government or healthcare sites.