CFLib.org – Common Function Library Project

Description:
Boolean check for a valid hexidecimal color. Thanks to Eric Carlisle (IsWebSafeColor).

Return Values:
Returns a Boolean.

Example:

<CFOUTPUT>
003366, #IsHexColor('003366')#<br>
aabbcc, #IsHexColor('aabbcc')#<br>
ffee, #IsHexColor('ffee')#<br>
eeffgg, #IsHexColor('eeffgg')#
</CFOUTPUT>

Parameters:

Full UDF Source:

/**
 * Returns true if valid hexadecimal color.
 * 
 * @param hexInput      Hex value you want to validate. (Required)
 * @return Returns a Boolean. 
 * @author Tony Brandner (tony@brandners.com) 
 * @version 1, July 15, 2013 
 */
function IsHexColor(hexInput) {
  var cleanHexInput = replace(hexInput,'##','','ALL');
  if (Len(ReReplace(cleanHexInput, "[0-9abcdefABCDEF]", "","ALL")) eq 0 and Len(cleanHexInput) gt 5) {
    return True;
  } else {
      return False;
    }
}