Hex #557300 or rgb(85,115,0) in RGB space is the tint of lime. It has hue angle of 75.65 degrees, value = 45 and saturation = 100. #557300 can be obtained by mixing 4 colors: 2 drops of yellow, 2 drops of red, 5 drops of green, 3 drops of black.
Nearest safe hex - #666600. Below you can see the block with #557300 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #557300 to the mixer and play with it.