About PaletteGen
A free toolkit for generating color palettes, checking contrast, building gradients and converting color formats, built for designers and developers.
What PaletteGen does
PaletteGen is a set of color tools that run entirely in your browser: a palette generator with eight harmony modes and an accessible-by-construction mode, a color converter for HEX, RGB, HSL, CMYK, HWB, Lab, LCH and OKLCH, a WCAG and APCA contrast checker, a linear/radial/conic gradient builder, a CSS light-dark() generator, and a color meanings reference. Every tool is free, requires no signup, and processes your input directly in your browser rather than sending it to a server.
How the tools work
Color conversions use standard, published formulas: the CSS Color Module for HSL, the naive on-screen approximation for CMYK (clearly disclaimed where it appears, since it isn't a substitute for a real print color profile). The contrast checker implements the WCAG 2.2 relative luminance formula and the APCA algorithm exactly as published by its maintainers, not an approximation. Where a page states a formula or threshold as fact, it links the source.
Privacy
Colors, images uploaded for extraction, and saved palettes are processed locally in your browser and are not transmitted to or stored on a server. See the Privacy Policy for full details.