Hex #507750 or rgb(80,119,80) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 47 and saturation = 33. #507750 can be obtained by mixing 4 colors: 5 drops of red, 5 drops of cyan, 4 drops of green, 2 drops of black.
Nearest safe hex - #666666. Below you can see the block with #507750 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #507750 to the mixer and play with it.