Free Online Color Tools

Convert colour codes, build palettes and gradients, check text contrast and find the name of any colour. All free, with no sign-up.

Color Contrast CheckerCheck whether text is readable on its background with the WCAG contrast ratio, see AA and AAA results for normal text, large text and controls, and get the closest colour that passes.
Color Name FinderFind the name of any colour: paste a HEX, RGB or HSL code and get the closest CSS colour names, a plain description, and the full list of 148 named colours to browse.
Color Palette GeneratorGenerate colour palettes at the press of a key, lock the colours you like, or build one from a base colour with analogous, complementary or triadic harmonies. Export as CSS variables, Tailwind or JSON.
CSS Gradient GeneratorDesign a linear, radial or conic gradient with as many colour stops as you like, see it live, and copy the CSS. Download it as a PNG background in common sizes.
HEX to RGB Color ConverterConvert a colour between HEX, RGB, HSL, HSV and CMYK in one step, including transparency. Paste a code in any format or pick a colour, then copy the format you need and check its text contrast.