Hex #553f2b or rgb(85,63,43) in RGB space is the tint of orange. It has hue angle of 28.57 degrees, value = 33 and saturation = 49. #553f2b can be obtained by mixing 4 colors: 4 drops of red, 3 drops of blue, 3 drops of green, 2 drops of black.
Nearest safe hex - #663333. Below you can see the block with #553f2b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #553f2b to the mixer and play with it.