Hex #556b13 or rgb(85,107,19) in RGB space is the tint of lime. It has hue angle of 75.00 degrees, value = 42 and saturation = 82. #556b13 can be obtained by mixing 4 colors: 3 drops of yellow, 1 drop of blue, 1 drop of green, 4 drops of black.
Nearest safe hex - #666600. Below you can see the block with #556b13 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #556b13 to the mixer and play with it.