Hex #80be66 or rgb(128,190,102) in RGB space is the tint of grass green. It has hue angle of 102.27 degrees, value = 75 and saturation = 46. #80be66 can be obtained by mixing 4 colors: 4 drops of yellow, 1 drop of red, 4 drops of cyan, 1 drop of black.
Nearest safe hex - #99cc66. Below you can see the block with #80be66 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #80be66 to the mixer and play with it.