RGB 0-1 float to 0-255
Enter the three floats to get an rgb() string and a HEX code for the web.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Enter red r, green g and blue b.
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
Each channel = round(value × 255), so 0.5 × 255 = 127.5 rounds to 128.
Example
Inputs: Red R = 1, Green G = 0.5, Blue B = 0. Result: CSS rgb(): rgb(255, 128, 0); Red R: 255; Green G: 128.
Limits and caveats
- HDR values above 1 are rejected because a standard screen cannot show them.
- Rounding to 256 steps loses very small differences between floats.
Questions about this tool
What is 0.5 in 0-255 RGB?
0.5 × 255 = 127.5, which rounds to 128, or 80 in hex.
Why does the color not match Blender?
Blender often shows linear values; convert them to sRGB first, then use this tool.
Can I enter more than 3 decimals?
Yes. Any precision works and the result rounds to the nearest whole number.