Here's an example Pantone unit that helps.
After that, you need as many colors as possible in your display adapter and display.
There is also an issue with some displays. Their dynamic range isn't great. Look to BARCO displays if you want to get serious -> http://www.barco.com/prepress/
I recently purchased a nikon 7600 dital camera and we love it alot, but I have come across a problem. I took pictures of my son and he was wearing a navy blue shirt, when I printed it, it came out blue. I thought it was the printer. When i looked on the camera scene it was blue. I went out and took pictures of some very vivid purple flowers and they all came out blue even when I tried different settings. I spoke to a friend who just bought the 7900 and his camera is doing the same thing. We really love the camera but turning navy blue into alomost a royal blue is not cool. Did anyone else experience this.