Hex #557700 or rgb(85,119,0) in RGB space is the tint of lime. It has hue angle of 77.14 degrees, value = 47 and saturation = 100. #557700 can be obtained by mixing 3 colors: 3 drops of yellow, 2 drops of green, 4 drops of black.
Nearest safe hex - #666600. Below you can see the block with #557700 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #557700 to the mixer and play with it.