濃紺|のうこんnoukon[0]heiban (flat)

1. no-adjectivedark blue
   ニューヨーク市にゅーよーくしの警官けいかんは濃紺のうこんの制服せいふくを着きている。↗

   New York City policemen wear dark blue uniforms.

• Synonym紺こんNeutralThe most general word for navy blue; 「濃紺」 is one shade deeper.
• SynonymダークブルーNeutralLoanword covering dark blue in general, with a wider shade range; 「濃紺」 refers specifically to deep navy.
• RelatedネイビーNeutralColloquial loanword for navy, common when talking about clothing, as in 「ネイビーのスーツ」.
• RelatedネービーブルーNeutralLoanword for navy blue, often used as a clothing color name; very close to 「濃紺」.
• Related濃紺色NeutralThe same color as 「濃紺」: simply 「濃紺」 plus 「色」, so the two are interchangeable.
• RelatedネイビイブルーNeutralAn alternative spelling of 「ネービーブルー」 with the same meaning.
• Antonym淡色たんしょくWrittenWritten/formal word for a light color, the opposite of the deep shade of 「濃紺」.
• Antonym薄色うすいろNeutralA pale, light color, the opposite of the deep blue of 「濃紺」.

For navy blue, 「紺」 is the most general choice; for a deeper shade say 「濃紺」, as in 「濃紺のスーツ」. In casual talk about clothing colors, 「ネイビー」 is common. For light colors, use 「淡色」 or 「薄色」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 濃こい紺色こんいろ。