RGB to HEX Color Converter

What Is a RGB to HEX Color Converter?

RGB to HEX conversion is needed when translating programmatically generated colors (from JavaScript, Python, or design APIs) into the compact HEX format used in CSS stylesheets. Color pickers in browser DevTools show RGB values, but many style guides and design systems specify colors in HEX. This converter handles the base-16 math instantly, supporting both standard 6-digit and shorthand 3-digit HEX output.

Example

RGB Input:

rgb(249, 115, 22)

HEX Output:

#F97316

How to Use This Converter

1. Paste your RGB data into the input panel.
2. View the converted HEX output — it updates instantly.
3. Click Copy to copy the result to your clipboard.
4. Verify the output matches your expectations before using in production.

Developer Tips

• RGB values range from 0-255 per channel. If your design tool outputs values above 255, it is using a different color space (like extended sRGB). Clamp values to 0-255 before converting to hex.
• Hex color codes are case-insensitive (#FF5733 = #ff5733), but convention in CSS uses lowercase. Some linting tools auto-format to lowercase - do not be confused when your uppercase hex gets changed.
• When converting a brand color to hex, the 6-digit result may not round-trip perfectly. Some RGB values with conversion rounding do not survive the round trip - always verify both directions.

Related Converters

• HEX to RGB Color Converter

All conversions run entirely in your browser — no data is sent to any server. For the specification, see MDN — HEX Color Notation.

Frequently Asked Questions