Here's a reference on a few RLM paints. Please note that we are dealing with three color media here: Paint, Computer Monitor, and Ink (printer). These are not directly related to each other (paint is an additive process. Monitor RGB [red, green, blue], and printer ink CMYK [cyan, magenta, yellow, black] are subtractive. In addition, colors vary by manufacturer, and colors on a monitor & printer can be electronically altered. Use the shades as relative colors, rather than absolutes.
http://www.aircraftcolors.com/german.html
Hope this helps (and is not too confusing).