You can represent hexadecimal numbers directly by preceding numbers in the proper range with &H. For example, &H10 represents decimal 16 in hexadecimal notation.
The following example uses the Hex function to return the hexadecimal value of a number:
Dim MyHex
MyHex = Hex(5) ' Returns 5.
MyHex = Hex(10) ' Returns A.
MyHex = Hex(459) ' Returns 1CB.