Color Photography Explained-1
In order that a clear understanding may be gained of the process employed in making prints on paper, such as are used in these volumes, a series of nine prints will be shown here. The first of this series, appearing above, shows the primary colors, red, green and blue-violet, and opposite these are their complementary colors, often incorrectly called the primary colors, blue-green, pink, and yellow. Colors are said to be complementary to each other when their separate rays combine to make pure white light. A further explanation of the employment of these colors will be found in the captions of the succeeding pictures of this series.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 12 Chapter 6