Hex #556355 or rgb(85,99,85) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 39 and saturation = 14. #556355 can be obtained by mixing 4 colors: 3 drops of red, 3 drops of cyan, 1 drop of green, 2 drops of black.
Nearest safe hex - #666666. Below you can see the block with #556355 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #556355 to the mixer and play with it.