Hex #50a020 or rgb(80,160,32) in RGB space is the tint of grass green. It has hue angle of 97.50 degrees, value = 63 and saturation = 80. #50a020 can be obtained by mixing 4 colors: 5 drops of yellow, 2 drops of cyan, 5 drops of green, 4 drops of black.
Nearest safe hex - #669933. Below you can see the block with #50a020 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #50a020 to the mixer and play with it.