Hex #809580 or rgb(128,149,128) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 58 and saturation = 14. #809580 can be obtained by mixing 4 colors: 1 drop of yellow, 1 drop of cyan, 4 drops of white, 4 drops of black.
Nearest safe hex - #999999. Below you can see the block with #809580 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #809580 to the mixer and play with it.