Hex #aa9040 or rgb(170,144,64) in RGB space is the tint of khaki. It has hue angle of 45.28 degrees, value = 67 and saturation = 62. #aa9040 can be obtained by mixing 4 colors: 1 drop of yellow, 4 drops of red, 4 drops of green, 3 drops of white.
Nearest safe hex - #999933. Below you can see the block with #aa9040 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #aa9040 to the mixer and play with it.