About this tool

ColorTools is a free suite of online color tools: pick colors from any uploaded image (HEX, RGB, HSL), explore the interactive color wheel to build harmonies, generate and browse curated color palettes, create CSS gradients with ready-to-copy code, convert between HEX/RGB/HSL/CMYK, and check WCAG contrast. Works in the browser, free, no account needed. Also available as a Chrome and Edge extension.