Colour Converter

Convert HEX, RGB, HSL and HSV and check WCAG contrast against black and white.

Colour (HEX, rgb(), or hsl())

How to use

Paste a colour as #rgb, #rrggbb, rgb(r,g,b) or hsl(h,s%,l%) and press Convert. The panel shows every notation, the relative luminance, and AA and AAA contrast verdicts.

FAQ

Contrast uses the WCAG 2 relative-luminance formula with a 0.03928 linearisation breakpoint. AA normal text needs 4.5:1 and AAA needs 7:1; the swatch preview fills with the converted colour.

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