# Hex Validator `Zend\Validator\Hex` allows you to validate if a given value contains only hexadecimal characters. These are all characters from **0 to 9** and **A to F**, case insensitive. There is no length limitation for the input you want to validate. ```php $validator = new Zend\Validator\Hex(); if ($validator->isValid('123ABC')) { // value contains only hex chars } else { // false } ``` > ### Invalid characters > > All other characters will return false, including whitespace and decimal > points. Additionally, unicode zeros and numbers from other scripts than latin > will not be treated as valid. ## Supported options There are no additional options for `Zend\Validator\Hex`.