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Colour Converter

Convert colours between HEX, RGB, HSL, HSV and CMYK, with a picker and contrast check.

  1. Paste your input
  2. Choose the options
  3. Copy the output
Runs in your browser. Your data and files never leave your device.

About the Colour Converter

Type a colour in any format — or pick one — to get it in every format, plus its contrast ratio with white and black text for accessibility.

Colour Converter formula

HEX #RRGGBB → R = RR₁₆, G = GG₁₆, B = BB₁₆

Each pair of hex digits is one channel from 00 (0) to FF (255). HSL describes the same colour as hue (0–360°), saturation and lightness; CMYK is an approximation for print — exact print colours depend on the printer profile.

Frequently asked questions

What contrast ratio do I need?

WCAG AA needs 4.5:1 for normal text and 3:1 for large text; AAA needs 7:1.

What contrast ratio do I need for text?

WCAG asks for at least 4.5:1 for normal text and 3:1 for large text (AA). The converter shows the ratio against white and black.

Why does my printed colour look different?

Screens mix light (RGB) and printers mix ink (CMYK). Some bright screen colours can’t be printed; ask your printer for a proof.

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