藍 - indigo

dyer's knotweed (Persicaria tinctoria, used to produce indigo dye)

cyanite; kyanite

surpassing one's master

livid

synthetic indigo

deep indigo

indigo wax shaped as an inkstick

indigo-dyed leather

indigo-colored ceramics; indigo-patterned cloth

indigo-tinged grey (gray)

scum formed near the end of the indigo fermentation process

Buddhist convent or monastery