The Dictionary of
Color Combinations

Tools / Color Converter

Color Converter.

Paste a color in any format — a hex code, rgb(), hsl(), HSV, CMYK, or oklch() — and copy it back in every other. It all runs in your browser; nothing is uploaded.

  • HEX —
  • RGB —
  • HSL —
  • HSV / HSB —
  • CMYK —
  • OKLCH —

Direct conversions

Jump straight to a single conversion — each has the formula, a worked example, and copy-paste code.

Which color format should I use?

For the web

HEX and RGB are interchangeable six-byte sRGB colors — use hex for brevity. HSL makes tints and shades a one-number tweak. OKLCH is the modern choice: its lightness is perceptually even, so accessible ramps and contrast behave predictably across hues.

For pickers & print

HSV / HSB is the model behind most color-picker squares (saturation × value). CMYK describes the four print inks — treat any RGB→CMYK number as a screen approximation and confirm with a proof, since print has a narrower gamut than your monitor.

Looking for a combination we don’t have yet?

Tell us the colour, mood, or palette you were after — it shapes which editorial combinations we add next.