Colours

Free tools from the Colours group.

Palettes & contrast

Color contrast checkerCheck text and background contrast per WCAG 2.1 AA and AAA. Automatic color correction.
Image color extractorExtract dominant colors from a photo or logo. Ready HEX and RGB codes to copy.
Color palette generatorGenerate 9 palettes from one color: monochromatic, complementary, triadic and more. HEX codes.

Colour conversion

HEX to RGBTurn a HEX code into RGB channels in 0–255 or 0–1 notation, alpha included.
RGB to HEXTurn RGB values into a HEX code for CSS. Accepts commas, spaces and percentages.
RGB to CMYKTurn a screen RGB colour into the four CMYK inks before you send a file to press.
CMYK to RGBTurn a colour from a print file into RGB for a website and social posts.