Blue pigment refers to a colorant that produces a blue hue and is used in various applications, including art, cosmetics, and manufacturing. One of the most well-known blue pigments is ultramarine, which is derived from the mineral lapis lazuli. Other types include Prussian blue and cobalt blue, each with unique properties and uses. Historically, blue pigments have been significant in art and culture. For example, the ancient Egyptians used Egyptian blue in their paintings and artifacts. Today, blue pigments continue to be essential in creating vibrant colors in products like paints, inks, and plastics.