Han blue

== English == === Etymology === From Han +‎ blue. From being a blue pigment last used during the Han Dynasty. === Noun === Han blue (uncountable) A pigment made from barium copper tetrasilicate (BaCuSi4O10), an artificial blue pigment, used by ancient Chinese for over 2 millennia before dying out at the end of the Han dynasty; one of the few alternates to azurite in ancient times. ==== Synonyms ==== Chinese blue ==== Coordinate terms ==== azurite Egyptian blue (the first artificial pigment, and of chemical similarity to Han blue) Prussian blue (the first artificial pigment widely used in the modern world; not an ancient pigment) ==== Related terms ==== Han purple === Anagrams === unhable