If you print in RGB or CMYK you have to read this.
I have a plotter now, it's painting and correcting with a very different brush, the computer.

Color theory, RGB and CMYK. Here is an 11" RCW for Photographer's. Without the pigment location dots.
http://www.realcolorwheel.com/rcwplotter.htm

A list of my subject as links.
|  Site Tree list of all links
|  Real Color Wheel Course
|  Painting Tips Gallery #1, of 6  
|  1st of 200 paintings with tips
|  W/C Paintings on Location
|  Acrylic Paintings on Location
|  Alkyd Paintings on Location
|  Painting with alkyd
|  Oil Paintings on Location
|  Fresco paintings on location
|  Children Learning Primary Color
|  Lineal  Perspective
|  Aerial  Perspective
|  Aerial  Perspective Palette
|  Pictura Translucida, lost media of the Dark Ages
|  Make Cera Cola paint, Lost Media of Ancient Egypt
|  Painting Waves
|  Permanent Transparent Colors
|  Color Wheel with Matching Tube Colors
|  All Complementary Colors Mix Neutral
|  36 Color Chips Mixing Neutral
|  Human Proportions and Painting
|  Painting Buon Fresco
|  Latest  Painting Lesson