Hex #99af99 or rgb(153,175,153) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 69 and saturation = 13. #99af99 can be obtained by mixing 4 colors: 1 drop of yellow, 1 drop of cyan, 5 drops of white, 3 drops of black.
Nearest safe hex - #999999. Below you can see the block with #99af99 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99af99 to the mixer and play with it.