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HEX colors only. WCAG AA/AAA results refer to text contrast, not overall accessibility.

Calculate WCAG contrast ratios for two opaque sRGB colors. HEX colors only. WCAG AA/AAA results refer to text contrast, not overall accessibility. Inputs stay on your device. Review the preview or output before using it; refresh the page to clear the current working session.

Black against white gives a 21:1 contrast ratio.