Specify colors using HEX values

#ff0000

#0000ff

#3cb371

#ee82ee

#ffa500

#6a5acd

Shades of gray

By using equal values for red, green, and blue, you will get different shades of gray:

#3c3c3c

#616161

#787878

#b4b4b4

#f0f0f0

#f9f9f9