Hex #503d0b or rgb(80,61,11) in RGB space is the tint of khaki. It has hue angle of 43.48 degrees, value = 31 and saturation = 86. #503d0b can be obtained by mixing 4 colors: 5 drops of red, 1 drop of blue, 5 drops of green, 5 drops of black.
Nearest safe hex - #663300. Below you can see the block with #503d0b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #503d0b to the mixer and play with it.