Hex #555f47 or rgb(85,95,71) in RGB space is the tint of olive. It has hue angle of 85.00 degrees, value = 37 and saturation = 25. #555f47 can be obtained by mixing 4 colors: 1 drop of yellow, 3 drops of red, 5 drops of blue, 3 drops of green.
Nearest safe hex - #666633. Below you can see the block with #555f47 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #555f47 to the mixer and play with it.