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Dev & Data Tool

Colour Converter

Convert between Hex and RGB values with a live colour picker, suggested pairings, and quick copy actions.

Choose a Colour

Pick visually or type values directly to convert between Hex and RGB.

Good for

  • Checking a brand or UI colour quickly in more than one format.
  • Converting RGB values from code into Hex without manual calculation.
  • Copying a colour value straight into design or development work.

Live Preview

A simple swatch preview of the current colour value.

Hex
#405F8C
RGB
rgb(64, 95, 140)

What to keep in mind

Hex is web-friendly

Hex is the most familiar shorthand for CSS and many design tools, which makes it a quick choice when you want to copy a colour into front-end work.

RGB is explicit

RGB is useful when colour channels are already being discussed numerically in code, graphics tools, or component systems.

Suggested pairings

Click any swatch to copy its Hex value. Each option also shows the RGB version for quick handoff into code or design notes.

Based on the current colour

How it works

You can start with the colour picker, type a Hex value, or enter RGB channels directly. As the colour changes, the page updates the other formats instantly.

This makes it useful when you already know one colour format and want the others without opening a design app or calculating values manually.

It also suggests a set of related palette options so you can quickly explore complementary, analogous, triadic, lighter, and darker variations of the same starting colour.

Hex and RGB conversions are direct and reliable for normal web colour work.

The suggested pairings are generated from the current colour using standard hue and lightness adjustments, which makes them useful as a quick starting point rather than a finished design system.

If you only need a quick CSS-ready value, using the picker and copying the Hex output is usually the fastest workflow.

What this colour converter is useful for

A colour converter is useful whenever colour values move between different tools, teams, or formats. Designers may share one version of a colour while a developer needs another.

This page is especially handy for front-end work, design handoff, QA checks, quick UI tweaks, and documenting palette values without switching to heavier software for a small task.

Because the tool is immediate and browser-side, it also works well as a quick utility while styling components, checking design tokens, or reviewing visual changes with teammates.

Common uses

  • Turning RGB values from code into a Hex value for CSS or documentation.
  • Checking a picked UI colour in more than one common format.
  • Sharing a colour with teammates in the format they actually need.
  • Exploring a few immediate pairing options from the same starting colour.
  • Copying a colour value quickly into design, front-end, or content workflows.

Practical tips for using colour values

Use Hex for web handoff

Hex is often the easiest format to share across CSS, design notes, and browser inspection work because it is short and widely recognised.

Keep RGB in range

RGB channels should stay between `0` and `255`. If a value sits outside that range, it usually means the colour data needs cleaning before use.

Use pairings as a starting point

Suggested pairings can help you move faster, but they are best treated as quick options to review rather than automatic final design decisions.

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