1.
blue
The color blue.
青い空
Blue sky.
青は私の好きな色です。
Blue is my favorite color.
青い海が見える。
I can see the blue sea.
青い鳥を見た。
I saw a blue bird.
青い服が似合う。
Blue clothes look good on you.
青い目をしている。
They have blue eyes.
2.
green (for traffic signals)
In Japanese, traffic lights that show 'go' are called 青 even though they appear green.
信号が青になった。
The traffic light turned green.
青になったら渡ってください。
Please cross when it turns green.
信号はまだ青じゃない。
The light isn't green yet.
青の間に渡ろう。
Let's cross while it's green.
信号が青に変わったので、道を渡った。
The light turned green, so I crossed the road.
青 covers a broader color range than English "blue" — it traditionally includes both blue and green.
COLOR RANGE:
In Japanese, 青 historically covered both blue and green. Though 緑 now covers green, 青 is still used for:
- 青信号: green traffic light (called "blue")
- 青葉: green leaves
- 青りんご: green apple
FORMS:
- Noun: 青 (the color blue)
- の-adjective: 青の空 (blue sky)
- い-adjective: 青い空 (blue sky)
FIGURATIVE USES:
- 青い: also means inexperienced, immature (青い考え — naive thinking)
- 青ざめる: to turn pale (with fear/shock)
- 青春: youth (literally "blue spring")
Related Words
Contrast:
緑 (green)