真っ青な（まっさおな、maっsaona）
- deep blue

The Japanese word 真っ青な (まっさおな) describes something that is intensely blue or pale blue. It often conveys a sense of vividness, extreme paleness, or a state of being startled, shocked, or frightened. The word combines the intensifier 真 (ま) meaning "very" or "completely" with 青い (あおい) meaning "blue" or "pale." Thus, 真っ青な directly translates to something like "very blue" or "completely pale blue," depending on the context. The nuance of 真っ青な is not just about the color, but also about the underlying emotion or condition that causes that color to appear.

⚫︎ 顔が真っ青な Translation: The face is deathly pale. ⚫︎ 雷の音に驚いて、真っ青な顔になった。 Translation: Startled by the sound of thunder, her face turned pale. ⚫︎ 真っ青な空の下で、ピクニックをした。 Translation: We had a picnic under a clear blue sky.

You use 真っ青な to describe: ⚫︎A very blue object, especially the sky or ocean. ⚫︎A face or skin that has turned pale due to shock, fear, or illness. In this case, it emphasizes the sudden change and the intensity of the emotion. ⚫︎Something that is extremely pale, regardless of the cause. When describing the color of an object or a person's complexion, it provides an image of the degree of blueness or paleness, highlighting the intensity of it.

⚫︎The word is typically written as 真っ青な in hiragana. ⚫︎The kanji form is 真っ青な, which combines the kanji for "true/very" 真 and the adjective for "blue" 青い. ⚫︎The okurigana (hiragana attached to the kanji) for the adjective 青い is necessary when writing in kanji, but it’s often written in hiragana.

⚫︎ 蒼い (あおい): Blue, pale blue. ⚫︎ 青白い (あおじろい): Pale blue, wan. ⚫︎ 血の気がない (ちのけがない): Pale (due to lack of blood/circulation). ⚫︎ 青ざめる (あおざめる): To turn pale, to blanch. (verb form)

⚫︎ 赤い (あかい): Red ⚫︎ ピンクの: Pink ⚫︎ 血色が良い (けっしょくがいい): Healthy complexion (lit. "good blood color")

彼は試験の結果を見て、顔が真っ青ななった。 ・Translation: He turned pale upon seeing the results of the exam. ・Explanation: The sentence highlights how his face changed color due to a strong emotional response (likely disappointment or shock).

あの事故の現場は、真っ青な空の下にあった。 ・Translation: The scene of that accident was under a clear blue sky. ・Explanation: The sentence describes the setting, emphasizing the clear, bright blue of the sky.

The word is a compound of 真 (ま), which intensifies the adjective, and 青い (あおい), "blue." Therefore, the origin stems from the need to express a stronger degree of the quality of being blue than the simple "blue" would express alone. The word is designed to amplify the impression of the color blue, and particularly, the pale blueness seen on a person's face.