Hex #8b9b8b or rgb(139,155,139) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 61 and saturation = 10. #8b9b8b can be obtained by mixing 4 colors: 2 drops of yellow, 3 drops of blue, 4 drops of white, 2 drops of black.
Nearest safe hex - #999999. Below you can see the block with #8b9b8b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #8b9b8b to the mixer and play with it.