Hex #409815 or rgb(64,152,21) in RGB space is the tint of grass green. It has hue angle of 100.31 degrees, value = 60 and saturation = 86. #409815 can be obtained by mixing 4 colors: 1 drop of yellow, 1 drop of red, 1 drop of blue, 5 drops of green.
Nearest safe hex - #339900. Below you can see the block with #409815 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #409815 to the mixer and play with it.