Hex #80b570 or rgb(128,181,112) in RGB space is the tint of grass green. It has hue angle of 106.09 degrees, value = 71 and saturation = 38. #80b570 can be obtained by mixing 4 colors: 5 drops of yellow, 4 drops of cyan, 3 drops of white, 4 drops of black.
Nearest safe hex - #99cc66. Below you can see the block with #80b570 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #80b570 to the mixer and play with it.