Hex #555940 or rgb(85,89,64) in RGB space is the tint of lime. It has hue angle of 69.60 degrees, value = 35 and saturation = 28. #555940 can be obtained by mixing 4 colors: 4 drops of red, 3 drops of cyan, 2 drops of green, 3 drops of black.
Nearest safe hex - #666633. Below you can see the block with #555940 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #555940 to the mixer and play with it.