Hex #89978a or rgb(137,151,138) in RGB space is the tint of green. It has hue angle of 124.29 degrees, value = 59 and saturation = 9. #89978a can be obtained by mixing 4 colors: 2 drops of yellow, 3 drops of blue, 5 drops of white, 3 drops of black.
Nearest safe hex - #999999. Below you can see the block with #89978a color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #89978a to the mixer and play with it.