hex

Validates that a field contains a hexadecimal number.

Options

Option	Type	Default	Description
message	string	locale default	Custom error message

Playground

Valid values

Value	Notes
"FF5733"	Valid hex digits
"0a1b2c"	Lowercase hex
"0"	Single digit

Invalid values

Value	Reason
"GG5733"	G is not a hex digit
"#FF5733"	Hash prefix is not allowed

Notes

• Empty string ("") always returns valid: true. Combine with notEmpty to require a value.
• For CSS color validation (with # prefix, rgb(), etc.), use color instead.