Hex #665c3c or rgb(102,92,60) in RGB space is the tint of khaki. It has hue angle of 45.71 degrees, value = 40 and saturation = 41. #665c3c can be obtained by mixing 4 colors: 4 drops of red, 2 drops of blue, 1 drop of cyan, 3 drops of green.
Nearest safe hex - #666633. Below you can see the block with #665c3c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #665c3c to the mixer and play with it.