Hex #605640 or rgb(96,86,64) in RGB space is the tint of khaki. It has hue angle of 41.25 degrees, value = 38 and saturation = 33. #605640 can be obtained by mixing 4 colors: 1 drop of red, 1 drop of green, 2 drops of white, 4 drops of black.
Nearest safe hex - #666633. Below you can see the block with #605640 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #605640 to the mixer and play with it.