The University of Nevada, Reno Department of Counseling and Educational Psychology visits to this site since August 19, 1998. Most of us look it up in a chart. There are many pages on the Web for this. There is also a handout I have included in your notebook. Here is a link to a good, one-page hexadecimal color code chart on the Web.
Underscores are hard to see in a link because the entire link is underlined.
Text between these tags will be changed to the color designated. Here is an example. I used the color code chart shown above to pick the hexidecimal for purple. This is the result You can also use the actual names of colors instead of the hex code, at least for an ever-increasing number of colors. Scroll down that page until you find the color names on the far left, or the hexidecimal numbers on the far right.