I love that companies now actually try and communicate what color their shirts are. What a damn concept!  I use the Hanes on-line color chart at Hanesink.com and the American Apparel on-line color chart (which I will spell out– http://www.americanapparel.net/wholesaleresources/colors.asp) all the time. Hanes has their chart front and center with a tab marked “Color,” duh!  American Apparel is pretty much impossible to find on their site. You actually can find it more easily in a Google search.  Both have closest PMS paper matches and CMYK, Hanes even adds the RGB. Most of us have a Pantone book, so that works. You still have to have swatch books (Hanes is great on providing those as well) and sometimes you have to see a real shirt, but the online colors with Pantone numbers is often all you need at least to get started.