Hex #aa812b or rgb(170,129,43) in RGB space is the tint of khaki. It has hue angle of 40.63 degrees, value = 67 and saturation = 75. #aa812b can be obtained by mixing 4 colors: 3 drops of yellow, 5 drops of red, 2 drops of cyan, 2 drops of green.
Nearest safe hex - #999933. Below you can see the block with #aa812b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #aa812b to the mixer and play with it.