Represents a hexadecimal digit character [0-9a-fA-F] in string patterns
HexadecimalCharacter
StringMatchQ[#, HexadecimalCharacter]& /@ {"1", "a", "2", "b", ".", "G"}
→ {True, True, True, True, False, False}StringMatchQ[#, HexadecimalCharacter]& /@ {"a", "1", "2", "X"}
→ {True, True, True, False}