Which of the following is a primary color?

The concept of primary colors is fundamental in color theory. In the traditional color wheel used in art and design, primary colors are the foundational colors that cannot be created by mixing other colors together. Blue, along with red and yellow, is considered one of the three primary colors in this model. These primary colors serve as the building blocks for creating a wide spectrum of other colors through various mixing methods.

When mixing colors, blue can combine with yellow to create green or with red to create purple. This illustrates how primary colors can interact to produce secondary colors, but the primary colors themselves remain distinct and irreplaceable. Understanding primary colors is essential for anyone working in fields involving color, such as painting, graphic design, or photography, as they inform the basic color mixing principles that guide color usage and creation.