The discovery of the first known synthetic blue pigment, Egyptian blue (CaCuSi 4O 10) was promoted by the Egyptian pharaohs who sponsored the creation of new pigments to be use in art.[8] Other civilizations combined organic and mineral materials to create blue pigments ranging from azure-blue like the Maya blue,[9] to the Han blue (BaCuSi 4O 10) which was developed by the Chinese Han dynasty and manipulated to produce a light or dark blue color.[10]