Last updated: March 2026
About the Color Contrast Pair Generator
The Color Contrast Pair Generator instantly finds 20 colors that pair with your brand color at WCAG AA (4.5:1) or AAA (7:1) contrast. Each result shows a live preview, the contrast ratio, and a one-click hex copy.
The math uses the W3C relative luminance formula, so every pair shown is guaranteed accessible by the current WCAG 2.1 standard.
Frequently Asked Questions
What are WCAG AA and AAA contrast ratios?
WCAG 2.1 defines two levels of visual contrast. AA requires at least 4.5:1 for normal text and 3:1 for large text (18pt+). AAA is stricter: 7:1 for normal text and 4.5:1 for large text. AAA is the gold standard for accessibility — particularly important for users with low vision or color blindness.
How do you calculate contrast ratio?
Contrast ratio uses the relative luminance of each color via the W3C formula: (L1 + 0.05) / (L2 + 0.05), where L1 is the lighter color's luminance and L2 is darker. This tool does the math client-side and only shows pairs that pass AA or AAA.
Why does my brand color need accessible pairs?
If users with low vision or age-related contrast loss can't read your text on your brand background, you lose them. The ADA and Section 508 require AA compliance for many US websites; EU, UK, and Canada have similar rules. Beyond compliance, higher contrast text reads faster for everyone.
Do I need different pairs for text vs background?
The same ratio applies either way (contrast is symmetric), but visual hierarchy differs. Switching the Tab in this tool re-renders the preview so you can see how the same hex pair feels as dark-on-light vs light-on-dark.
Can I export these as CSS variables?
Click any swatch to copy the hex. Paste into your CSS, Tailwind config, or design tokens. We're planning a bulk CSS export feature in a future update.