Developer & Web
RGB to HEX Converter
RGB to HEX — RGB to HEX Converter maps each red, green and blue channel (0–255) to a two-digit hexadecimal value and joins them as #RRGGBB. This page runs that same calculation on your numbers, in your browser: no signup, no uploads, nothing stored.
Want to convert a colour between formats? RGB to HEX Converter does it from your RGB colour and shows the colour in each format clearly, with everything calculated in your browser.
About this calculator
RGB to HEX Converter maps each red, green and blue channel (0–255) to a two-digit hexadecimal value and joins them as #RRGGBB. It matters when a format, encoding or size has to be exactly right for the system reading it. Here is the calculation on real numbers: Convert RGB(30, 144, 255): 30→1E, 144→90, 255→FF, giving #1E90FF . For your own figures, use the calculator above — same method, your inputs, computed on-device.
How to use
- Enter an RGB colour like rgb(255, 136, 0).
- Or type plain values like 255, 136, 0.
- Press Calculate to get the hex code.
- Read and copy the hex colour.
Why use RGB to HEX Converter
Fast
Calculations run in your browser. No round trip to a server.
Private
Your inputs never leave your device. Nothing is uploaded.
Free
No signup, no paywall, no ads-in-results, no watermarks.
Accurate
Conversions are computed exactly in your browser, with no rounding beyond what is shown.
Mobile-ready
Optimised for phones, tablets, and desktops alike.
Transparent
Honest disclaimers wherever browser limits or regional rules apply.
Common uses
Use it when matching a brand colour
Use it when copying a colour into code
Use it when building a colour palette
RGB to HEX in design-tool workflows
Use it for theming a site or app
Use it for CSS and design tokens
Technical notes
RGB to HEX Converter maps each red, green and blue channel (0–255) to a two-digit hexadecimal value and joins them as #RRGGBB.
Results are reference values; validate against your own environment before relying on them in production.
Nothing you type is uploaded — the calculation happens entirely on your device.
FAQ
Can I enter rgb(255, 136, 0)?
Yes. Both rgb(...) syntax and plain comma-separated values work.
What range do the channels use?
Each of red, green, and blue must be a whole number from 0 to 255.
What does 255, 136, 0 convert to?
The hex colour #ff8800.
Does the RGB to HEX Converter send my data to a server?
No. The RGB to HEX Converter runs entirely in your browser, so nothing you enter is uploaded, stored, or shared.
Worked example
Convert RGB(30, 144, 255): 30→1E, 144→90, 255→FF, giving #1E90FF.