Hex #556b32 or rgb(85,107,50) in RGB space is the tint of olive. It has hue angle of 83.16 degrees, value = 42 and saturation = 53. #556b32 can be obtained by mixing 4 colors: 4 drops of red, 2 drops of blue, 1 drop of cyan, 5 drops of green.
Nearest safe hex - #666633. Below you can see the block with #556b32 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #556b32 to the mixer and play with it.