Hex #553c0e or rgb(85,60,14) in RGB space is the tint of khaki. It has hue angle of 38.87 degrees, value = 33 and saturation = 84. #553c0e can be obtained by mixing 4 colors: 3 drops of red, 1 drop of magenta, 4 drops of green, 4 drops of black.
Nearest safe hex - #663300. Below you can see the block with #553c0e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #553c0e to the mixer and play with it.