Hex #506150 or rgb(80,97,80) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 38 and saturation = 18. #506150 can be obtained by mixing 4 colors: 5 drops of red, 5 drops of cyan, 2 drops of green, 4 drops of black.
Nearest safe hex - #666666. Below you can see the block with #506150 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #506150 to the mixer and play with it.