Hex #556d1c or rgb(85,109,28) in RGB space is the tint of lime. It has hue angle of 77.78 degrees, value = 43 and saturation = 74. #556d1c can be obtained by mixing 4 colors: 2 drops of red, 4 drops of green, 1 drop of white, 2 drops of black.
Nearest safe hex - #666633. Below you can see the block with #556d1c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #556d1c to the mixer and play with it.