Color contrast is the difference in luminance between text and its background. Good contrast ensures readability for all users, including those with visual impairments.
Enter a text color and a background color. The tool calculates the contrast ratio and tells you if it passes WCAG AA (minimum) or AAA (enhanced) standards.
Frequently Asked Questions
Q: What is WCAG?
What is WCAG? WCAG (Web Content Accessibility Guidelines) is the international standard for web accessibility.
Q: What contrast ratio is good?
What contrast ratio is good? 4.5:1 for normal text (AA), 3:1 for large text (AA), 7:1 for enhanced (AAA).
Q: What WCAG level should I target?
What WCAG level should I target? For standard websites, target WCAG AA (4.5:1 for normal text). For accessibility-focused projects or government sites, target WCAG AAA (7:1). Large text (18px+ bold) needs 3:1 or 4.5:1.
Q: Does this tool check for color blindness?
Does this tool check for color blindness? No, contrast ratio is about luminance, not color perception. Use our Color Blindness Simulator alongside the Contrast Checker for comprehensive accessibility testing.
Q: How do I fix a failing contrast ratio?
How do I fix a failing contrast ratio? Either darken the text color, lighten the background color, increase the font size, or make the text bold. The tool highlights which WCAG levels pass or fail in real time.