Paletter builds color palettes in OKLCH, the perceptually uniform color space, from twelve classic harmony methods — complementary, split-complementary, analogous, triadic, tetradic, monochrome and more — on an interactive color wheel and a 3-D color solid. Every swatch shows its nearest RAL Classic, RAL Design and NCS reference with a ΔE distance, and the whole palette can snap to orderable register colors. A WCAG contrast grid, color-blindness simulation (deuteranopia, protanopia, tritanopia, monochromacy) and palette extraction from photos are built in. Export as CSS variables, JSON, palette PNG, swatch cards or a printable contact board. Free, no account, no upload — everything runs in your browser.
Paletter and its sibling app Musiccer were conceived on the same swim at the dog beach of Balatonföldvár, Lake Balaton, where László Kerezsi was swimming with Lili the samoyed: the same wheel that organizes color can organize music. Two weeks later both tools were online. Both are free tools by Vision Graphics, a Hungarian 3D visualization and software studio that also builds tailored tools and apps for companies.
Paletter runs entirely in your browser — enable JavaScript to use the app.