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HEX, RGB and CMYK Colour Converter

Translate web colour codes with an immediate visual preview.

Colour conversion happens locally in this browser.Nothing is uploaded or stored.
#2563EBrgb(37, 99, 235)

Choose a colour

RGB channels

Converted codes

CMYK is a mathematical estimate. Professional print output depends on the printer, ink, paper and ICC colour profile.

How to use this tool

  1. Enter a HEX value, use the colour picker, or adjust red, green and blue channels, then copy the required code.
  2. Review the live result and use Copy result when you need to share it.

How the transformation works

HEX and RGB conversions are deterministic. CMYK is a mathematical estimate because production print depends on colour profiles, ink and paper. Processing runs entirely in this browser. The page does not upload, persist, execute or remotely inspect the supplied content.

Processing rules

HEX and RGB conversions are deterministic. CMYK is a mathematical estimate because production print depends on colour profiles, ink and paper. Processing runs entirely in this browser. The page does not upload, persist, execute or remotely inspect the supplied content.

Step-by-step transformation

  1. Enter a HEX value, use the colour picker, or adjust red, green and blue channels, then copy the required code.
  2. HEX and RGB conversions are deterministic. CMYK is a mathematical estimate because production print depends on colour profiles, ink and paper. Processing runs entirely in this browser. The page does not upload, persist, execute or remotely inspect the supplied content.
  3. Check the displayed result, then copy it if needed.

Worked example

Entering #336699 produces rgb(51, 102, 153) and an estimated cmyk(66.7%, 33.3%, 0%, 40%).

Risk guidance

Frequently asked questions

Does this tool send my inputs anywhere?

No. The interactive calculation runs in your browser and this site does not submit tool inputs to a backend.

How should I use the result?

Check that the entered units and values match your situation, especially around dates, breaks, and rounding.

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