RGB to Hex Converter

RGB

Hex

What is RGB to Hex conversion?

RGB to Hex conversion is the process of converting colors from the RGB color model (Red, Green, Blue) to hexadecimal color codes. RGB uses decimal values from 0-255 for each color channel, while hexadecimal color codes use base-16 notation with values from 00 to FF for each channel.

For example, the RGB color rgb(255, 0, 0) (pure red) converts to the hex color #ff0000. The hex format is widely used in web development, CSS, HTML, and graphic design because it's more compact and easier to copy and share.

How does RGB to Hex conversion work?

To convert RGB to hex, each RGB component (red, green, blue) is converted from decimal (base-10) to hexadecimal (base-16):

  1. Take the red value (0-255) and convert it to hexadecimal (00-FF)
  2. Take the green value (0-255) and convert it to hexadecimal (00-FF)
  3. Take the blue value (0-255) and convert it to hexadecimal (00-FF)
  4. Combine them with a # prefix: #RRGGBB

For RGBA colors with transparency, the alpha channel is also converted and appended: #RRGGBBAA. The alpha value is converted from the 0-1 decimal range to 0-255, then to hexadecimal.

Why use hex colors instead of RGB?

Hex colors offer several advantages over RGB notation:

  • Compactness: #ff0000 is shorter than rgb(255, 0, 0)
  • Web standard: Hex is the most common format in CSS and HTML
  • Easy to copy: A single string that's easy to share and paste
  • No spaces: Hex codes don't contain spaces, making them URL-friendly
  • Widely supported: Compatible with all design tools and browsers

Common RGB to Hex conversions

Here are some frequently used color conversions:

  • rgb(255, 255, 255) → #ffffff (white)
  • rgb(0, 0, 0) → #000000 (black)
  • rgb(255, 0, 0) → #ff0000 (red)
  • rgb(0, 255, 0) → #00ff00 (green)
  • rgb(0, 0, 255) → #0000ff (blue)
  • rgb(128, 128, 128) → #808080 (gray)
Need to convert the other way? Use our Hex to RGB Converter to convert hexadecimal color codes back to RGB values.