How to convert RGB to hex color

How to convert from RGB color to hexadecimal color code.

RGB color

The RGB color is a combination of Red, Green and Blue colors:

(R, G, B)

The red, green and blue use 8 bits each, which have integer values from 0 to 255.

So the number of colors that can be generated is:

256×256×256 = 16777216 = 1000000₁₆

Hex color code

Hex color code is a 6 digits hexadecimal (base 16) number:

RRGGBB₁₆

The 2 left digits represent the red color.

The 2 middle digits represent the green color.

The 2 right digits represent the blue color.

RGB to hex conversion

1. Convert the red, green and blue color values from decimal to hex.
2. Concatenate the 3 hex values of the red, green and blue togather: RRGGBB.

Example #1

Convert red color (255,0,0) to hex color code:

R = 255₁₀ = FF₁₆

G = 0₁₀ = 00₁₆

B = 0₁₀ = 00₁₆

So the hex color code is:

Hex = FF0000

Example #2

Convert gold color (255,215,0) to hex color code:

R = 255₁₀ = FF₁₆

G = 215₁₀ = D7₁₆

B = 0₁₀ = 00₁₆

So the hex color code is:

Hex = FFD700

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