Examples of conversion

RGB to Hex

To change the color saved in the RGB system to Hex system, the following steps must be taken:

the individual values of the numbers for the individual colors (red, green, blue) stored in the decimal system, replace them with hexadecimal values
combine (glue) the individual hexadecimal values in the following order: red, green, blue

For example:
the color saved as RGB 252,58,108 we replace
R = 252₁₀ = FC₁₆
G = 58₁₀ = 3A₁₆
B = 108₁₀ = 6C₁₆
This means that the color saved in the Hex system is: #FC3A6C

Hex to RGB

In this case, we proceed as follows:

take the first two characters and change them from hexadecimal to decimal. This is red
Take the two middle characters and change them from hexadecimal to decimal. It is green
take the last two characters and swap them from hexadecimal to decimal. This is blue

For example:
the color saved as Hex #51C563 we replace
51₁₆ = 81₁₀ = R
C5₁₆ = 197₁₀ = G
63₁₆ = 99₁₀ = B

This means that the color saved in the RGB system is: 81,197,99