You do not need to be able to convert to and from hexadecimal, but for

those who are curious we will take a closer look.

Your use to base 10 numbers where each place is 10 times the previous.

You have the 1's, the 10's and 100's places and so on.

In hexadecimal each place is 16 times the previous.

So you have the 1's, the 16's, 256's, place and so on.

If we look at the two digits for each color we have the ones and 16's places.

The red of this color is 8A, which is 8 in the 16's place plus A,

which is 10 in the 1's place, that makes 138.

For the green you get 2 in the 16's place.

Plus B, which is 11 in the 1's place, which makes 43.

For blue you have E which is 14 in the 16's place,

and two in the 1's place, which makes 226.