Complementary color generator
Find the color directly across the wheel — and the schemes around it — in one click.
Open the palette generator →What complementary means
Complementary colors sit opposite each other on the color wheel (180° apart). Paired well, they create strong, high-energy contrast — great for calls to action. GenHub's palette tool also offers analogous, triadic and tetradic harmonies if you want something softer or more varied.
Use it with contrast in mind
High contrast is striking but can be hard to read. The palette tool shows WCAG contrast ratios so you can check text legibility against each color before you commit.
FAQ
Can I pick the base color?
Yes — edit any swatch's hex and reroll to build harmonies around your chosen base.
Does it check accessibility?
Yes. The contrast report shows AA/AAA levels for each color on white and black.