What are secondary colors created by combining?

Secondary colors are formed by mixing two primary colors. In color theory, primary colors are defined as those that are not created by mixing other colors; instead, they serve as the foundation for creating a spectrum of other colors. The primary colors in traditional color theory are red, blue, and yellow. When you combine these, you achieve the secondary colors: mixing red and blue makes purple, blue and yellow make green, and yellow and red create orange. This systematic approach links the concept of primary colors directly to the composition of secondary colors, solidifying the relationship between them in artistic practice.

Options that involve all three primary colors, complementary colors, or any random colors do not specifically pertain to the straightforward definition of secondary colors, which relies solely on the interaction between just two primary colors.