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How to Read RGB Hex Code?

Published in Color Codes 2 mins read

RGB hex code is a way to represent colors using a hexadecimal format, common in web design and digital graphics. You read it by understanding that it breaks down into three parts: Red, Green, and Blue.

Understanding the Structure

A typical RGB hex code looks like this: #RRGGBB. Let's break it down:

  • The # symbol indicates that this is a hexadecimal color code.
  • RR represents the red component, using two hexadecimal digits.
  • GG represents the green component, also using two hexadecimal digits.
  • BB represents the blue component, again using two hexadecimal digits.

Decoding Hexadecimal Values

Each pair of hexadecimal digits (RR, GG, BB) represents a decimal value from 0 to 255. Hexadecimal uses 16 symbols: 0-9 and A-F, where A=10, B=11, C=12, D=13, E=14, and F=15.

  • 00 represents the lowest intensity (0 in decimal).
  • FF represents the highest intensity (255 in decimal).

Reading an Example

Let's take the hex code #FFA500 as an example:

  • FF (Red): This means the red component is at its maximum intensity (255).
  • A5 (Green): 'A' is 10 and '5' is 5. Therefore, A5 represents (10 * 16) + 5 = 165 in decimal. This indicates a medium-high intensity of green.
  • 00 (Blue): This means there is no blue in this color.

Therefore, #FFA500 represents a shade of orange.

Converting Hex to Decimal

To understand the intensity of each color component, you can convert the hex value to its decimal equivalent.

For a two-digit hex value XY, the decimal equivalent is calculated as: (X * 16) + Y.

For example:

  • #4682B4 (Steel Blue)
    • Red: 46 -> (4 * 16) + 6 = 70
    • Green: 82 -> (8 * 16) + 2 = 130
    • Blue: B4 -> (11 * 16) + 4 = 180

This tells us that Steel Blue has a moderate amount of Red and Green, but a higher amount of Blue.

Summary

Reading RGB hex code involves understanding that the six-digit code (preceded by a '#') is broken into three two-digit hexadecimal values, representing the intensity of red, green, and blue respectively. By converting these hex values to decimal (0-255), you can understand the color composition.

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