"Aoi" is listed as blue/green in dictionaries. It can also mean "pale" in some contexts. "Midori" is specifically green, there's also "mizuiro" (color of water)

"Aoi" is listed as blue/green in dictionaries. It can also mean "pale" in some contexts. "Midori" is specifically green, there's also "mizuiro" (color of water) which is specifically light blue. Basically there are broad shades,but if you need to describe a specific color there is probably also a word for it.