Hexadecimal is used a lot in coding because you can count to 16 with four digits of binary. Whenever you see color listed as #1A1A1A or #FF0000, it's using hexidecimal. Check out my binary clock https://scratch.mit.edu/projects/1378897533 Scroll down to learn more \/\/\/ Hexidecimal counts 1 2 3 4 5 6 7 8 9 A B C D E F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 and so on Hexidecimal RGB codes work by mixing Red Blue and Green on a scale from 0 to 255 (or FF in Hexidecimal) So if you want red, you use 255 for red, 0 for green, and zero for blue, or FF 00 00 White is FFFFFF Mixing red and blue to get purple is FF00FF
