Hexadecimal is a base-16 number system using digits 0-9 and letters A-F.
Why it matters
It is compact for binary data: one byte is two hex digits. Web colors such as #2563FF are three hex pairs for red, green and blue.
Hexadecimal is a base-16 number system using digits 0-9 and letters A-F.
It is compact for binary data: one byte is two hex digits. Web colors such as #2563FF are three hex pairs for red, green and blue.