Hex #5b4b18 or rgb(91,75,24) in RGB space is the tint of khaki. It has hue angle of 45.67 degrees, value = 36 and saturation = 74. #5b4b18 can be obtained by mixing 4 colors: 5 drops of red, 2 drops of blue, 5 drops of green, 2 drops of black.
Nearest safe hex - #663300. Below you can see the block with #5b4b18 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5b4b18 to the mixer and play with it.