The three primary colors of light are red, green, and blue. When all three colors are mixed equally, white light is produced. However, if only two colors are mixed equally, one of the three secondary light colors (yellow, cyan, and magenta) will result.
The diagram below can be used to add the colors. For example, if green and blue are mixed, cyan will result because cyan is located between the green and blue circles.
What color will result if red and green light are mixed?