Free Online RGB to HEX Converter
RGB to HEX conversion is a core part of web and graphic design. RGB stands for Red, Green, and Blue, the additive color model used for digital screens. HEX (hexadecimal) is a six-digit code used in HTML and CSS to define colors in a format browsers understand perfectly. Each RGB value (from 0 to 255) becomes a two-digit hexadecimal number, giving you a compact code like #FF5733. If you aren't sure of your exact values, use our Color Picker & Converter to visually find the perfect shade.
Converting RGB to HEX by hand means base-16 math, which is slow and easy to get wrong. Our converter instantly turns your color values into accurate codes, ready for your stylesheet. This helps a lot when you need to match a color from a photo: use our Image Color Picker to pull the exact RGB values from any upload, then convert them here for consistent branding. This tool keeps the workflow simple: enter values on the left, supporting content below, and the sidebar on the left for popular and related tools.
Instant conversion
Results appear in real time as you type your red, green, and blue values.
Live color preview
A dynamic swatch shows you exactly what the HEX code looks like.
One-click copy
Quickly copy the # code to your clipboard for instant use in CSS.
Private by design
Everything runs in your browser, so your color data never leaves your device.
How it works
- Enter your Red value from 0 to 255 in the first input on the left.
- Add your Green and Blue values in the same range.
- Watch the HEX code and color swatch update right away.
- Check the large HEX code and preview in the result panel.
- Click Copy HEX to grab the code for your stylesheet.
Best practices
- Keep each value between 0 and 255 for a valid color.
- Fill in all three values to generate a full HEX code.
- Use the 6-digit code for the widest browser support.
- Pull exact values from a photo with the Image Color Picker.
- Save your brand HEX codes so colors stay consistent.
- Double-check the preview swatch before using the code.
Frequently asked questions
Can I enter RGB values outside the 0-255 range?
No. Standard RGB values are restricted to a range of 0 to 255. Entering values outside this range results in an invalid color code.
Is this RGB to HEX tool free?
Yes. Our converter is 100% free, secure, and runs entirely client-side. There are no daily limits or registration requirements.
What is the difference between RGB and HEX?
RGB describes a color by the intensity of light (Red, Green, Blue), while HEX is simply a hexadecimal representation of those same values, used mainly in web coding.
How do I find the RGB values of an image?
You can use our Image Color Picker to upload a photo and click on any pixel to get its exact RGB and HEX values instantly.
Can I use this tool on my smartphone?
Absolutely. This tool is fully responsive and designed to work perfectly on mobile browsers, tablets, and desktops.
Does this RGB to HEX tool support Alpha (RGBA) transparency?
This tool converts standard RGB to 6-digit HEX. For transparency, you would typically add an extra two hex digits at the end (HEXA).
Why is my HEX code only 3 digits sometimes?
While some CSS colors can be shorthand (like #F00 for #FF0000), our tool provides the full 6-digit code for maximum compatibility and precision.
Can I convert HEX back to RGB?
Yes. You can use our Color Picker & Converter to switch between various formats, including HEX to RGB and HSL.
Does this RGB to HEX tool store my color history?
No. We prioritize your privacy. Once you refresh the page, all previous inputs and results are cleared.
Do I need to include the '#' symbol?
Our tool automatically generates the '#' symbol for you, so you can copy and paste the result directly into your CSS file.
Need more color tools? Find the perfect shade with the Color Picker & Converter tool, or pull colors from any image with the Image Color Picker tool.