Color Contrast Checker
Ensure your color combinations meet WCAG accessibility standards
Related guides
Understanding WCAG Color Contrast (With Examples)
What WCAG color contrast ratios mean, the AA and AAA thresholds, how the ratio is computed from relative luminance, and how to fix text that fails accessibility checks.
HEX, RGB, HSL, and LCH: A Developer's Guide to CSS Colors
The four ways CSS lets you write a color, what each one is good at, and why HSL feels intuitive while LCH solves the gamut problems everyone trips over.
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