That said, standard names don't include every possible color. What if we want to use burnt orange? That's when hexadecimal colors come in handy.

<html>
 <head><style>.box {color: #fff;background-color: #bf5700;}</style>
</head><body><div class="box">Hook 'em!</div></body>
</html>
]]>

Hexadecimal colors are very common on the Web. They start with a hash symbol, have three or six digits and represent the amount of red, green and blue in a color.

Not quite! Hexadecimal colors start with a hash symbol.