Dafuq?
hex colour isnt just some random colour picking code, its RED RED GREEN GREEN BLUE BLUE with each of those being from 0 - F.
so FF0000 would be pure red as it is highest red and the other colours are nothing.
FF00FF would be purple as it is highest red and highest blue, mixing them together.
With this we're taking A-F out of the range so our colours won't be very bright. And, the age range of this forum isn't by much, so you're gonna get from xx xx 90 - xx xx 99, which is a high amount of blue. After that, 00+ means there isn't a lot of blue so the colours would be a mix of the others, reddish or greenish. Keeping in mind that the months would be 1 - 12 and the days would be 1 - 31, so the order you put your date in will matter a lot.