Hex #555f15 or rgb(85,95,21) in RGB space is the tint of lime. It has hue angle of 68.11 degrees, value = 37 and saturation = 78. #555f15 can be obtained by mixing 4 colors: 4 drops of red, 1 drop of cyan, 5 drops of green, 2 drops of black.
Nearest safe hex - #666600. Below you can see the block with #555f15 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #555f15 to the mixer and play with it.