Hex #553d13 or rgb(85,61,19) in RGB space is the tint of khaki. It has hue angle of 38.18 degrees, value = 33 and saturation = 78. #553d13 can be obtained by mixing 4 colors: 2 drops of yellow, 1 drop of red, 1 drop of blue, 5 drops of black.
Nearest safe hex - #663300. Below you can see the block with #553d13 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #553d13 to the mixer and play with it.