indigo

adjective
🔊/ˈɪndɪɡəʊ/
🔊/ˈɪndɪɡəʊ/
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  1. very dark blue in colour靛蓝;靛青
    • an indigo sky靛蓝色的天空
    Topics Colours and Shapesc2
    Word Originmid 16th cent.: from Portuguese índigo, via Latin from Greek indikon, from indikos ‘Indian (dye)’, from India.

indigo

noun
🔊/ˈɪndɪɡəʊ/
🔊/ˈɪndɪɡəʊ/
[uncountable]
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  1. a very dark blue colour靛蓝;靛青
    • a wide variety of blues from deep indigo to the palest azure 各种蓝调,从深靛蓝到最浅的天蓝色
    Topics Colours and Shapesc2