The three primary colors are adjacent colors

Quick answer：

The statement 'The three primary colors are adjacent colors' is incorrect. The three primary colors in the context of color theory are red, blue, and yellow. Adjacent colors are those that are next to each other on the color wheel and include colors that are similar in hue but differ in saturation or brightness. For example, red and red-violet are adjacent colors. It is important to differentiate between primary colors and adjacent colors in the study of color theory.