Hex #5b4100 or rgb(91,65,0) in RGB space is the tint of khaki. It has hue angle of 42.86 degrees, value = 36 and saturation = 100. #5b4100 can be obtained by mixing 3 colors: 5 drops of red, 5 drops of green, 4 drops of black.
Nearest safe hex - #663300. Below you can see the block with #5b4100 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5b4100 to the mixer and play with it.