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AI Color Contrast Checker

Intelligently check if color contrast meets WCAG accessibility standards, supporting AA/AAA level detection - essential for designers and developers

Contrast Checker Interface

Interactive checker will be available soon

Features

  • ✓ Real-time contrast ratio calculation between foreground and background colors, precise to two decimal places
  • ✓ WCAG 2.1 standard detection: AA level (4.5:1) and AAA level (7:1)
  • ✓ Multiple color format input: HEX, RGB, HSL, CMYK with live color preview
  • ✓ AI smart recommendations: auto-suggest closest compliant colors when contrast fails
  • ✓ Screen color picker, image color picker, one-click color code copying

How to Use

  1. Select or input foreground color (text color)
  2. Select or input background color
  3. View contrast ratio and WCAG compliance status
  4. If non-compliant, use AI recommendation to adjust colors

FAQ

What is the WCAG contrast standard?

WCAG (Web Content Accessibility Guidelines) defines contrast standards: AA level requires normal text contrast ≥4.5:1, large text ≥3:1; AAA level requires normal text ≥7:1, large text ≥4.5:1.

Why is color contrast important?

Good contrast ensures all users (including those with visual impairments) can clearly read content. It's also a legal requirement for web accessibility, affecting SEO and user experience.

Why are standards different for large and small text?

Large text (18pt+ or 14pt bold+) has larger character area, making it recognizable at lower contrast levels, so standards are relatively relaxed.

How does AI color recommendation work?

AI analyzes the current color position on the color wheel, intelligently adjusting lightness and saturation while maintaining hue consistency to find the closest compliant color.

Can I batch check multiple color combinations?

Yes. Import design system color variables (CSS variables, Tailwind config, etc.) to check all color combinations for compliance at once.