YInMn Blue
YInMn Blue (; for the chemical symbols Y for yttrium, In for indium, and Mn for manganese), also known as MasBlue, Oregon Blue, and Subramanian('s) Blue, is an inorganic blue pigment. == Crystal structure == The compound has a unique crystal structure in which trivalent manganese ions in the trigonal bipyramidal coordination are responsible for the observed intense blue color.