Which of the following is considered a primary color?

In the context of the color wheel used in art and design, blue is classified as a primary color. Primary colors are the foundational colors that cannot be created by mixing other colors together but can be combined in various ways to produce a broad spectrum of other colors. The primary colors in the traditional color wheel are red, yellow, and blue.

Blue specifically holds significance because it adds depth and stability to color combinations; it can be mixed with yellow to create green or with red to create purple. Hence, blue’s role as a primary color is essential for understanding color theory and how colors interact with one another in various artistic applications.