Hex #8fb780 or rgb(143,183,128) in RGB space is the tint of grass green. It has hue angle of 103.64 degrees, value = 72 and saturation = 30. #8fb780 can be obtained by mixing 4 colors: 4 drops of yellow, 3 drops of cyan, 5 drops of white, 4 drops of black.
Nearest safe hex - #99cc99. Below you can see the block with #8fb780 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #8fb780 to the mixer and play with it.