How do you determine this?
It is pretty straight forward. Each pair of characters represent a number ranging between 0 and 255 in hexadecimal format (HEX). You may be familiar with RGB. RGB is essentially a way to tell the computer what color you want to see. For example, #34AD3F. The first pair, 34, is in HEX. This converted to base 10 (numbers we count with) is 52. The second pair is AD in HEX which equates to 173 in base 10. The third pair is 3F in HEX which equates to 63 in base 10.
We now have our three values: 52 173 63 . Remember the RGB mentioned earlier and how each pair is a value between 0 and 255? Well, the position of the pair in the HEX value is respective to the order of the RGB acronym. This means that we have a value of 52 for R, a value of 173 for G, and a value of 63 for B. We now know how much Red, Green, and Blue (RGB) our color contains. Based on this, we can get an idea of what the color will be when you mix the three.
I hope this helped! 👌