I am simply testing pages here
Hexadecimal is a type of number format, meaning it is simply a way to represent numerical values. Ranging from 0-F, or, 16 characters:
(0-9, 9 to A, A-F)
Us humans use the neat decimal system having the ability to represent numbers from 0-9.
Binary is another type of number format, which computers use. They can only represent 2 values per unit, being 0 and 1, or LOW and HIGH. This is what makes computers digital.
Hexadecimal is used for various things, something most likely familiar to the average layman would be color codes, for example: #FF0000 is fully red. Note: #RRGGBB.