About
ColorTools is a free suite of online color tools for designers and developers. Pick colors from any uploaded image (HEX, RGB, HSL), explore an interactive color wheel to build harmonies, generate and browse curated palettes, create CSS gradients with ready-to-copy code, convert between HEX/RGB/HSL/CMYK, and check WCAG contrast. No sign-up, runs in the browser, free. Also available as a Chrome and Edge extension.