Hex #5b9549 or rgb(91,149,73) in RGB space is the tint of grass green. It has hue angle of 105.79 degrees, value = 58 and saturation = 51. #5b9549 can be obtained by mixing 4 colors: 1 drop of yellow, 4 drops of red, 4 drops of cyan, 5 drops of green.
Nearest safe hex - #669933. Below you can see the block with #5b9549 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5b9549 to the mixer and play with it.