Hex #aaa180 or rgb(170,161,128) in RGB space is the tint of khaki. It has hue angle of 47.14 degrees, value = 67 and saturation = 25. #aaa180 can be obtained by mixing 4 colors: 1 drop of yellow, 2 drops of red, 2 drops of cyan, 1 drop of white.
Nearest safe hex - #999999. Below you can see the block with #aaa180 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #aaa180 to the mixer and play with it.