Color Tools

This category has 37 tools for choosing, converting and checking colours. The Color Picker shows HEX, RGB, HSL, HSV and CMYK values together, the Color Converter moves between HEX, RGB, HSL, HSV, CMYK, LAB and CSS names, and the Color Contrast Checker tells you whether text passes WCAG AA or AAA. Palette tools build harmonies, shades, tints and Material-style scales, and Nearest Tailwind Color finds the closest Tailwind shade for any hex value.

The maths follows CSS Color 4, so modern formats such as OKLCH, LAB and display-p3 are read correctly, and out-of-gamut colours are mapped into sRGB the way browsers do it. Colour difference uses CIEDE2000, and the Color Blindness Simulator applies published simulation matrices for the main types of colour vision deficiency. Results are copied as ready-to-paste CSS values.