RGB to HEX Converter

Convert RGB color values to HEX codes instantly with a live swatch preview — free online.

R (0-255) G (0-255) B (0-255)

HEX

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About

About the RGB to HEX Converter

Converts red, green and blue values (0-255 each) into a HEX colour code, with a live swatch preview.

Developers use it to turn RGB values from a design spec or colour picker into the HEX code a CSS file needs, while designers use it to see exactly what colour a set of RGB channel values produces. This sits among Toolapt's other free designer tools, open to use without an account and with no cap on how often you run it.

Guide

Using the RGB to HEX Converter

How to use 4 Features 7 Who uses this 4

1

Step 1

Enter the Red, Green and Blue values (0 to 255 each).
2

Step 2

Watch the swatch and HEX value update as you type.
3

Step 3

Copy the HEX value with the "Copy HEX" button.
4

Step 4

Click Clear to reset all three fields and start over.

Converts individual R, G and B values (0-255 each) directly into a HEX colour code
Shows a live colour swatch, so you can see the resulting colour as you adjust each channel
Updates the HEX value instantly as you type, with no need to click a button first
Validates each channel is within the 0-255 range before producing a result
Works entirely in your browser — no installs and no sign-up
Free to use, with no limit on how many times you run it
Fully responsive, so it works just as well on a phone as on a desktop

Developers

Developers use the RGB to HEX Converter for turning RGB values from a design spec or colour picker into the HEX code a CSS or design file needs.

Designers

Designers use the RGB to HEX Converter for previewing exactly what colour a set of red, green and blue channel values produces before finalizing it.

Students

Students use the RGB to HEX Converter for learning how RGB channel values map to a HEX colour code.

Anyone matching a colour

Anyone matching a colour uses the RGB to HEX Converter for converting RGB values read from an image editor's eyedropper tool into a HEX code for other software.

Examples

RGB to HEX Converter examples

3 worked examples

Converting a brand blue

Enter R=59, G=130, B=246 to get the HEX code #3B82F6, with the swatch instantly showing a vivid blue.

A warm orange-red

Enter R=255, G=87, B=51 to get #FF5733, updated live in the swatch as you type each value.

Pure black and white

R=0, G=0, B=0 converts to #000000 (black), while R=255, G=255, B=255 converts to #FFFFFF (white).

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FAQ

Frequently asked questions

Quick answers to common questions about the RGB to HEX Converter.

Still have a question?

Send us a message and we'll help you out.

What does the RGB to HEX Converter do?

It converts red, green and blue values (0-255 each) into their equivalent HEX colour code, with a live swatch preview.

Is the RGB to HEX Converter free to use?

Yes. It's free, with no sign-up, no watermark and no limit on how many times you use it.

Is my input safe when I use this tool?

Yes. The RGB values you enter are processed entirely on your own device — nothing is sent to a server.

What range should the R, G and B values be in?

Each of Red, Green and Blue should be a whole number from 0 to 255 — the standard 8-bit range each colour channel uses.

Does it support alpha (transparency)?

The core conversion covers RGB; for a value with transparency, use the Colour Converter, which accepts rgba() input and produces an 8-digit HEX code with an alpha channel.

Why is the HEX output always uppercase (or lowercase)?

HEX codes are case-insensitive in CSS and most software, so either case works identically — the converter simply picks one consistent style for the output.

Can I use the RGB to HEX Converter on my phone?

Yes. The page is fully responsive and works on mobile, tablet and desktop browsers alike.

Does the RGB to HEX Converter have any limitations?

It expects each channel value between 0 and 255; values outside that range aren't valid RGB and won't produce a HEX result.

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RGB to HEX Converter

About the RGB to HEX Converter

Using the RGB to HEX Converter