The kanji 青 (pronounced あお in Japanese) primarily represents the color blue, and also, by extension, green. It can also signify something unripe, inexperienced, or young. The core meaning revolves around a color that is associated with nature, freshness, and often, youthfulness.

・On-yomi (音読み): セイ (sei) ・Kun-yomi (訓読み): あお (ao)

⚫︎青い空 Translation: Blue sky ⚫︎青年 Translation: Youth; young man ⚫︎青信号 Translation: Green light (used in traffic signals, although it's technically 緑, green, in English)

The kanji 青 is a pictograph. The original form depicts plants or vegetation. It evolved over time to represent the color of these plants, which is commonly green. Later, it expanded to include the color blue as well. It shares a relationship with the radical of grass 艸, which further emphasizes its connection to nature and growing things.