Yellow is a primary color that can be produced by mixing red and green light or pigments. It is a warm color that is often associated with happiness, sunshine, and optimism. Yellow is also a very visible color, which is why it is often used for traffic signs and caution tape.
Yellow has been used in art and design for centuries. In ancient Egypt, yellow was the color of gold, which was associated with the sun god Ra. In China, yellow is the color of the emperor, and it is considered to be a lucky color. In the West, yellow is often used to represent happiness and joy.