Hex #665c44 or rgb(102,92,68) in RGB space is the tint of khaki. It has hue angle of 42.35 degrees, value = 40 and saturation = 33. #665c44 can be obtained by mixing 4 colors: 3 drops of yellow, 1 drop of magenta, 3 drops of blue, 3 drops of black.
Nearest safe hex - #666633. Below you can see the block with #665c44 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #665c44 to the mixer and play with it.