I dug around a little this morning to help a customer with identifying a color. Maroon & Burgandy are always a bugger!
Check out these 2 wikipedia links.
This one lists Crayola colors. That's nice since everyone has a point of reference with the old box of 64 crayons with the sharpener in the back. These are colors we have known our whole life.
This list is much bigger. It will help you determine slight differences in shade, but is sorted by name. This is very helpful like with today's question I had to help with burgandy or maroon), but if you are looking for a color, the name may not matter so much.
The solution is very simple. On the Wikipedia list, the column right after the picture of the color is the color's "code". You can imput that code here: Name that Color and see where on the color wheel you are. This will help you find complimentary and contrasting colors...another challenge we sometimes face.
Now, go have fun playing with color...virtually, or in your stash!