Cobalt blue
Cobalt blue in impure forms had long been used in Chinese porcelain, but it was independently discovered as a pure alumina-based pigment by Louis Jacques Thénard in 1802. Commercial production began in France in 1807. The first recorded use of "cobalt blue" as a color name in English was in 1777. The leading world manufacturer of cobalt blue in the 19th century was Benjamin Wegner's Norwegian company Blaafarveværket ("blue colour works" in Dano-Norwegian). Germany was also famous for production, especially the blue colour works ("Blaufarbenwerke") in the Ore Mountains of Saxony.
Joseon
Blue and white porcelain artifacts decorating white porcelain with paintings and designs in underglaze by using natural cobalt pigment are another example of popular wares of the Joseon period. Many of these items were created by court painters employed by the royal family. During this period, the popular style of landscape paintings is mirrored in the decoration of ceramics. Initially developed by the Chinese at the Jingdezhen kilns in the mid-14th century, Joseon began to produce this type of porcelain from the 15th century under Chinese influence. The first cobalt imported from China was used by Korean artists. In 1463 when sources of cobalt were discovered in Korea, artists and their buyers found the material was inferior in quality and preferred the more expensive imported cobalt. Korean porcelain with imported cobalt decoration contradict the emphasis of an orderly, frugal and moderate life in Neo-Confucianism.