Hex #559d4c or rgb(85,157,76) in RGB space is the tint of green. It has hue angle of 113.33 degrees, value = 62 and saturation = 52. #559d4c can be obtained by mixing 4 colors: 1 drop of magenta, 5 drops of green, 2 drops of white, 1 drop of black.
Nearest safe hex - #669933. Below you can see the block with #559d4c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #559d4c to the mixer and play with it.