Hex #40a82b or rgb(64,168,43) in RGB space is the tint of grass green. It has hue angle of 109.92 degrees, value = 66 and saturation = 74. #40a82b can be obtained by mixing 3 colors: 1 drop of yellow, 1 drop of blue, 2 drops of green.
Nearest safe hex - #339933. Below you can see the block with #40a82b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40a82b to the mixer and play with it.