Color & design
Convert colors, build palettes and check contrast against WCAG.
Color converter HEX, RGB, HSL, HSV and CMYK — every format, kept in sync. Contrast checker WCAG 2.2 contrast ratio with pass/fail for every text size, and a suggested fix. Palette generator Build harmonies — complementary, triadic, analogous — from any base color. Shades & tints A full tonal ramp from any color, ready to paste into a design system. CSS gradient generator Linear and radial gradients with live CSS output. Color blindness simulator See a palette as someone with deuteranopia, protanopia or tritanopia would.