Troy - if you're preparing your material for commercial print (magazine, book, etc) then you'll also want to think in CMYK space. Separation and going to print from RGB to CMYK is a bit of a minefield at times.
Image 1 below shows you the relative gamuts and what to expect in print (CMKY) if you keep thinking in RBG and then want to print something commercially.
Image 2: RGB (red, green & blue - additive colour)
Image 3) CMY[K] (cyan, magenta, yellow - subtractive colour)
http://www.printernational.org/rgb-versus-cmyk.php