W3 Schools is a great resource for information on using colors in HTML. The colors HOME page starts with a tutorial on the most common color designations–named colors, RGB, and HEX. The tutorial lets you try the HTML yourself.
If you want to explore different color standards, you can
- dive into different national and trade organization color standards
- find the HEX codes for your favorite Crayola crayon colors
- see the latest color trends,
- and much more!