noun
dark blue; deep blue; navy blue
Refers to a deep, dark shade of blue, similar to navy blue. Used as a noun to describe the color itself.
彼は深青のスーツを着ていた。
He was wearing a dark blue suit.
この絵の深青がとても美しい。
The deep blue in this painting is very beautiful.
Compound of 深 (fuka, 'deep') + 青 (ao, 'blue'). The reading ふかあお is a straightforward combination of the kun'yomi readings of the two kanji.