12345678910111213141516Keywordindigoblue dyeFrequency#4353Strokes16ReadingsdiànMnemonic青 (blue) gives the meaning and 定 the sound.Stroke orderComposed of青green定to fixUsed in vocabulary靛diànindigo pigment靛蓝diànlánindigo (dye)蓝靛lándiànindigo靛青diànqīngindigo靛蓝色diànlánsèindigo blue