Egyptian blue is one of the first synthetic pigments created by ancient Egyptians around 2500 BCE. It is made from a mixture of silica, lime, copper, and alkali, which are heated together to form a blue glass that can be ground into a powder. This vibrant pigment was used in various applications, including wall paintings, pottery, and jewelry. The color is notable for its bright, vivid hue and excellent durability, making it a popular choice in ancient art. Egyptian blue was often associated with the divine and was used to depict the sky and water, symbolizing life and fertility in ancient Egyptian culture.