Hex #5b8d43 or rgb(91,141,67) in RGB space is the tint of grass green. It has hue angle of 100.54 degrees, value = 55 and saturation = 52. #5b8d43 can be obtained by mixing 4 colors: 5 drops of yellow, 1 drop of blue, 3 drops of cyan, 5 drops of black.
Nearest safe hex - #669933. Below you can see the block with #5b8d43 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5b8d43 to the mixer and play with it.