Complementary Colors Generator
Enter any base color and instantly see its complementary (opposite) color. Complementary pairs create maximum contrast — perfect for calls-to-action, highlights and bold layouts.
Colors
What Are Complementary Colors?
Complementary colors sit directly opposite each other on the color wheel — 180° apart in hue. Because they contain no shared hues, they produce maximum visual contrast and tension. Red and green, blue and orange, yellow and purple are the three classic complementary pairs.
How to Use Complementary Colors
- Call-to-action buttons: Pair a brand color background with its complementary color for a CTA that pops.
- Text on colored backgrounds: Complementary text is highly readable but test contrast with our WCAG checker.
- Accents and highlights: Use the complement sparingly — 5–10% of a design is usually enough.
- Sports teams and branding: Complementary pairs create memorable, energetic identities.