RGB to HEX Converter
Turn RGB color values into six-digit hex codes for CSS and design work, with a live preview of the result.
About RGB to HEX Converter
An RGB to hex converter translates the three channel values designers and tools produce into the compact six-character codes CSS accepts. Design software often reports colors as red, green, and blue numbers, while stylesheets expect hex. Instead of doing base-16 arithmetic by hand or pasting values between apps, this tool produces the code instantly and shows you the actual color as a preview.
Each of the three channels, which range from 0 to 255, is converted to a two-digit hexadecimal pair, so rgb(255, 87, 51) becomes #ff5733. Values outside 0-255 are clamped to the valid range, and the tool outputs lowercase hex, the convention in most modern codebases. The live preview swatch updates as you type, so you can verify the color before copying rather than discovering an error later in your stylesheet.
Web developers use it when porting colors from design files into CSS variables, and designers use it to convert brand palettes into developer-ready formats. Accessibility-conscious teams find it useful when checking contrast pairs, since hex codes are easy to compare against WCAG calculators. Students and hobbyists learning how color representation works in digital systems will appreciate seeing the relationship between channel values and their hexadecimal form.
How to Use
- Enter the red, green, and blue channel values (0-255).
- Watch the hex code update live as you adjust any channel.
- Copy the hex code straight into your CSS or design tool.
Example
R=255, G=87, B=51 #ff5733
Each channel converts to a two-digit hexadecimal number: 255 → ff, 87 → 57, 51 → 33, producing #ff5733.
FAQ
Can I enter values outside 0-255?
Channels are clamped to the 0-255 range, the valid range for 8-bit RGB color in CSS and most image formats.
What if I need an 8-digit hex with alpha?
This tool outputs standard six-digit hex. For alpha, use the Color Code Converter, which also handles RGBA and HSLA.
Is lowercase or uppercase hex better?
Both are valid in CSS. This tool outputs lowercase, which is the more common convention in modern codebases.
How do I get RGB values from an image?
Open the image in any editor or browser inspector, then use the color picker. Most tools display the RGB values directly, ready to paste into this converter.
Is #ff5733 the same color as rgb(255, 87, 51)?
Yes, they are exactly the same color in two notations. Hex is just the base-16 shorthand for the same three channel values.