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rgb(255, 0, 0)

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About RGB and HEX Colors

RGB (Red, Green, Blue) and HEX (Hexadecimal) are two fundamental color representations used in digital design and web development.

RGB (Red, Green, Blue)

RGB is an additive color model where colors are created by combining red, green, and blue light. Each component ranges from 0 to 255. For example, pure red is (255, 0, 0) in RGB. This model is used for all digital displays including computer monitors, TVs, and mobile devices. RGB is the native color model for most digital imaging and is widely used in CSS for web design.

HEX (Hexadecimal)

HEX is a hexadecimal representation of RGB colors, commonly used in web design and development. It consists of a hash symbol (#) followed by six characters (0-9 and A-F) representing the red, green, and blue components. Pure red is #FF0000 in HEX. HEX codes are compact, easy to copy/paste, and are the standard color format in HTML and CSS for web pages.

RGB to HEX Conversion Process

  1. Take the RGB values (each between 0-255)
  2. Convert each decimal value to its two-digit hexadecimal equivalent:
    • Divide the number by 16
    • Write down the quotient (0-15)
    • Write down the remainder (0-15)
    • Convert numbers 10-15 to letters A-F
  3. Combine the three hexadecimal pairs
  4. Prefix with a hash symbol (#)

Example #1

Convert pure red RGB (255, 0, 0) to HEX:

Red: 255 → 255/16 = 15 (F) remainder 15 (F) → FF

Green: 0 → 00

Blue: 0 → 00

HEX = #FF0000

Example #2

Convert medium blue RGB (0, 0, 128) to HEX:

Red: 0 → 00

Green: 0 → 00

Blue: 128 → 128/16 = 8 remainder 0 → 80

HEX = #000080

Common RGB to HEX Examples

  • 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(255, 255, 0) → #FFFF00 (yellow)
  • rgb(0, 255, 255) → #00FFFF (cyan)
  • rgb(255, 0, 255) → #FF00FF (magenta)
  • rgb(128, 128, 128) → #808080 (gray)

While RGB is more intuitive for color manipulation, HEX codes are more compact and are the standard format for web development. Converting between these formats allows designers and developers to work in the most appropriate space for their needs while ensuring consistent color reproduction across different platforms.

RGB to HEX FAQ

What's the difference between RGB and HEX?

RGB represents colors as three separate values (Red, Green, Blue) from 0-255, while HEX represents the same information as a six-digit hexadecimal code prefixed with #. HEX is essentially a different representation of RGB values, optimized for use in web development.

When should I use HEX instead of RGB?

Use HEX when working with web design (HTML/CSS) as it's the standard format. Use RGB when you need to programmatically manipulate colors or when working with design software that uses RGB values. HEX is more compact and easier to copy/paste between applications.

Are all RGB colors perfectly convertible to HEX?

Yes, all RGB colors can be perfectly converted to HEX because HEX is just a different representation of the same RGB values. There is no loss of information or color accuracy when converting between these formats.

Why are some HEX codes 3 characters instead of 6?

Short HEX notation (like #F00 for red) is used when each color component pair has identical digits (#FF0000 becomes #F00). Our converter always uses the full 6-digit format for consistency and clarity, but browsers and CSS will accept either format.