Anyone who’s built a webpage has encountered hexadecimal colors–the six-digit codes that identify one of 16,777,216 different colors you encounter on the web. It’s easy enough to identify ...

How to Use Hex Codes in Gmail to Show Smiley Faces. Using Gmail is a convenient way to keep in touch with your clients and employees.

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.

Hexadecimal format allows us to instruct a computer to display a color using three or six characters. For example, #000 will produce black. But how many words can be created in Hex and what colors ...