Hex #665433 or rgb(102,84,51) in RGB space is the tint of khaki. It has hue angle of 38.82 degrees, value = 40 and saturation = 50. #665433 can be obtained by mixing 4 colors: 2 drops of red, 1 drop of cyan, 1 drop of green, 1 drop of black.
Nearest safe hex - #666633. Below you can see the block with #665433 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #665433 to the mixer and play with it.