Im extremly new to this so no judging please! But how do I learn the codes for colors for instance white = FFF.

Answer 1

It's pretty simple actually.
First let's remember this is an hexadecimal system meaning the range of digits you can use is 0, 1, 2, 3, 4 ,5 , 6, 7, 8, 9, A, B, C, D, E and F. So the range of colors you can use is from 000000 to FFFFFF, 0 being the darkest and F being the brighest.
Now, the second important thing to remember is that this color system is RGB, which means Red, Green, Blue. Now take a look at the HTML coloring system and you can notice there are 6 digits in the system, which translates to 3 pairs (00-00-00 or FF-FF-FF). The first pair of digits are designated to the color Red, the second pair of numbers are designated to the color Green and the third pair of numbers are designated to the color Blue.
Now let's make an example: Do you want the brightest Red you can get? Then your code would be #FF0000, but let's say you're not happy with this color as it is too bright, so you need to change it to something darker. You could use #AA0000 which is still Red but a little bit darker. And you can keep going down, the closer to 00 the first pair of numbers is the darker your red will be. Until of course you arrive at #000000 which is pure black.

Answer 2

go to Google and search for Hex colour codes