| Title | 
                
                    Test
                    Find
                    
                    Pattern Title
                 | 
            
            
                | Expression | 
                ^#?([a-f]|[A-F]|[0-9]){3}(([a-f]|[A-F]|[0-9]){3})?$  | 
            
            
                | Description | 
                Tests for valid HTML hexadecimal color codes. The # symbol is optional. And it will except either the 3 digit form for the 216 Web safe colors, or the full 6 digit form. I am use it on my site to allow users to customize the site's colors.  | 
            
            
                | Matches | 
                #00ccff | #039 | ffffcc  | 
            
            
                | Non-Matches | 
                blue | 0x000000 | #ff000  | 
            
            
                | Author | 
                
                    Rating:
                        
 
                    Chris Craft
                 | 
            
            
                | Source | 
                http://www.cjcraft.com/ | 
            
            
              | Your Rating | 
              
                
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	                Title: sfd
	                Name: sdf
	                Date: 6/15/2010 2:05:05 AM
	                Comment: 
sdf
                
                
            
                
	                Title: pattern Title
	                Name: Carol
	                Date: 2/5/2010 11:53:19 AM
	                Comment: 
This expression does not validate correctly.  I was able to validate 3 alpha characters, which is not a valid color.
                
                
            
                
	                Title: Alternatives 2.1 [edit]
	                Name: TSMike
	                Date: 7/14/2006 4:34:24 AM
	                Comment: 
Shorter than ^#?([0-9a-fA-F]{3}){1,2}$ shorter:^#?([0-9A-f]{3}){1,2}$
                
                
            
                
	                Title: Alternatives 2
	                Name: TSMike
	                Date: 7/14/2006 4:33:17 AM
	                Comment: 
Shorter than ^#?([0-9a-fA-F]{3}){1,2}$ shorter:^#?([0-9A-F]{3}){1,2}$ 
                
                
            
                
	                Title: ? Issue w/old browsers
	                Name: Helper
	                Date: 9/8/2004 12:11:36 PM
	                Comment: 
The ? character in this expression will not work on older browsers I have found.
                
                
            
                
	                Title: Alternatives
	                Name: SuperRembo
	                Date: 6/16/2004 1:00:50 PM
	                Comment: 
Shorter (an more clear i think):
^#?[0-9a-fA-F]{3}([0-9a-fA-F]{3})?$
Even shorter:
^#?([0-9a-fA-F]{3}){1,2}$