Where the shape comes from
A fresh sprout 生 growing up beside a well or a mineral pigment pit, the blue-green of new plant growth giving the character both its colour and its sense of youth, freshness. It names young people themselves in 青年, youth, and lends its shape and sound to 清, clear, and 晴, sunny, fine weather, both keeping something of the same freshness.
汉字 filed under 青
No published character on HSK Guide is filed under this radical yet. 汉字库.