Hex #888a88 or rgb(136,138,136) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 54 and saturation = 1. #888a88 can be obtained by mixing 4 colors: 4 drops of magenta, 2 drops of blue, 5 drops of green, 4 drops of white.
Nearest safe hex - #999999. Below you can see the block with #888a88 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #888a88 to the mixer and play with it.