The term "blue color" refers to a specific shade or hue within the color spectrum, typically described as bright and vibrant. In its most basic sense, blue is one of the three primary colors in painting and traditional color theory, along with red and yellow. It is often associated with feelings of calmness, serenity, and tranquility, and can evoke a sense of peacefulness or relaxation when seen. The phrase "blue color" may also refer to any object or substance that has a blue appearance, such as the sky on a clear day, the ocean, or certain types of flowers.