Hex #667866 or rgb(102,120,102) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 47 and saturation = 15. #667866 can be obtained by mixing 3 colors: 1 drop of green, 4 drops of white, 5 drops of black.
Nearest safe hex - #666666. Below you can see the block with #667866 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #667866 to the mixer and play with it.