Hex #4e803b or rgb(78,128,59) in RGB space is the tint of grass green. It has hue angle of 103.48 degrees, value = 50 and saturation = 54. #4e803b can be obtained by mixing 4 colors: 1 drop of red, 5 drops of green, 3 drops of white, 4 drops of black.
Nearest safe hex - #669933. Below you can see the block with #4e803b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4e803b to the mixer and play with it.