King's Kung-Fu& Tai Chi

Japanese symbol for “indigo”

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

In Japanese, indigo is , read (ai).

Before using these characters for a tattoo, check them with a native speaker. Dictionary words often have several meanings, and the right choice depends on context.

Meanings

  1. n dyer's knotweed (Persicaria tinctoria, used to produce indigo dye)
  2. n indigo (dye)
  3. n indigo (colour)

Written forms: . Readings: .

Kanji and stroke order

indigo
on: ラン
kun: あい
18 strokes · JLPT 1

Other Japanese words for “indigo”

WordReadingMeaning
インディゴ indigoindigo (dye); indigotin
あいいろ aiiroindigo blue; indigo
インドあい indoaiindigo
らんてん rantenindigo
ようらん youranindigo

Related words

Words that share a kanji.

WordReadingMeaning
がらん garantemple (esp. large one); monastery
あいご aigomottled spinefoot (Siganus fuscescens); dusky rabbitfish; sandy spinefoot
あいいろ aiiroindigo blue; indigo
しちどうがらん shichidougarancomplete seven-structured temple compound
あいや aiyaindigo dyer
かんらん kanrancabbage

See also: Chinese symbol for “indigo”.

Data: JMdict (CC BY-SA 4.0); KANJIDIC2 (CC BY-SA 4.0); KanjiVG (CC BY-SA 3.0); wordfreq (CC BY-SA 4.0 (data)). Retrieved 2026-10-22.