Hex #999580 or rgb(153,149,128) in RGB space is the tint of khaki. It has hue angle of 50.40 degrees, value = 60 and saturation = 16. #999580 can be obtained by mixing 3 colors: 3 drops of magenta, 4 drops of green, 3 drops of white.
Nearest safe hex - #999999. Below you can see the block with #999580 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #999580 to the mixer and play with it.