Hex #50a740 or rgb(80,167,64) in RGB space is the tint of grass green. It has hue angle of 110.68 degrees, value = 65 and saturation = 62. #50a740 can be obtained by mixing 4 colors: 5 drops of yellow, 4 drops of cyan, 3 drops of green, 4 drops of black.
Nearest safe hex - #669933. Below you can see the block with #50a740 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #50a740 to the mixer and play with it.