HexadecimalCharacter

HexadecimalCharacter represents a hexadecimal digit character 0–9, a–f, A–F in StringExpression.

Examples

Match hex digits:

StringMatchQ["A", HexadecimalCharacter]
(* True *)

Extract hex characters:

StringCases["Color: #FF00AA", HexadecimalCharacter]
(* {"F", "F", "0", "0", "A", "A"} *)

Match hex string:

StringMatchQ["deadbeef", HexadecimalCharacter ..]
(* True *)

Please visit the official Wolfram Language Reference for more details.