Hex #5b6f4f or rgb(91,111,79) in RGB space is the tint of grass green. It has hue angle of 97.50 degrees, value = 44 and saturation = 29. #5b6f4f can be obtained by mixing 4 colors: 4 drops of yellow, 5 drops of blue, 1 drop of white, 4 drops of black.
Nearest safe hex - #666666. Below you can see the block with #5b6f4f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5b6f4f to the mixer and play with it.