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A
A-1
Desktop Color Primer
This appendix covers concepts that are basic to printing in color, including:
• Properties of color
• Printing techniques
• Effective use of color
• Raster images and vector images
• File optimization for processing and printing
If you are already familiar with color theory and digital color printing, you can skip to 
the last section (
on optimizing files for printing.
The properties of color
This section introduces concepts that are basic to color theory. You will encounter 
some of these concepts (such as hue, saturation, and brightness) when you work with 
color in applications; others provide useful background information. Color is a complex 
topic, so consider this a starting point for experimentation and further research.
The physics of color
The human eye can see electromagnetic radiation at wavelengths between 
400 nanometers (purplish blue) and 700 nanometers (red). This range is called the 
visible spectrum of light. We see pur
colors. Sunlight at midday, which we perceive as white or neutral light, is composed 
of light from across the visible spectrum in more or less equal proportions. 
Appendix A: 
Desktop 
Color Primer