Sky Blue
Light Blue, Aqua Blue
noun, の adjective
You'd think that water color would have something to do with watercolors, but it doesn't. No, it has to do with the color of water, which, ironically, is sky blue in English. Light blue works as well.
The reading for this word consists of the kun'yomi reading of 水 and the kun'yomi reading of 色. For 水 you'll know this reading via your vocab studies. For 色 it just so happens to be the reading you learned with the kanji.
あの水色のバッグがほしいんですが。
I want that light blue bag.
青いペンキと白いペンキをまぜて、水色のペンキができた。
I got sky blue paint by mixing blue and white paint.
どうして今日の空は水色なんだろう？
Why is the sky light blue today?