What is the rarest color in the world?

The rarest color in the world is believed to be a shade of blue known as YInMn blue. This vibrant blue was discovered accidentally by scientists at Oregon State University in 2009 while trying to develop new materials for electronics applications. YInMn blue is composed of a unique combination of yttrium, indium, and manganese oxides and is considered to be the first new blue pigment to be discovered in over 200 years.

YInMn blue's rarity comes from the fact that it is not readily available for commercial use, as the production process is complex and expensive. Additionally, its unique chemical composition gives it a particularly vivid and intense hue that is difficult to replicate with other pigments.

Despite its rarity, YInMn blue has gained popularity among artists and designers for its striking color and its ability to maintain its vibrancy even in extreme conditions. As a result, there is ongoing research to find more efficient ways to produce and use this rare and beautiful pigment.