Hex codes are especially useful for matching colors in an Illustrator document to those on a Web page, as both HTML and CSS use hexadecimal codes to specify colors.

In the ‘80s, X system programmers had the option to identify colors the way many developers do today: with a hexadecimal value (AKA hex value, e.g., #FFFF00) or an RGB color code (e.g., 255,255,0).

' Named Colors Wheel ' is a useful color picker for web design, etc., which combines color codes and color names used to specify colors in HTML. Only 139 colors are grouped together in the Named ...