Hex #40902b or rgb(64,144,43) in RGB space is the tint of grass green. It has hue angle of 107.52 degrees, value = 56 and saturation = 70. #40902b can be obtained by mixing 4 colors: 3 drops of yellow, 2 drops of cyan, 3 drops of green, 4 drops of black.
Nearest safe hex - #339933. Below you can see the block with #40902b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40902b to the mixer and play with it.