Hex #669566 or rgb(102,149,102) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 58 and saturation = 32. #669566 can be obtained by mixing 4 colors: 2 drops of magenta, 1 drop of blue, 5 drops of green, 2 drops of white.
Nearest safe hex - #669966. Below you can see the block with #669566 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #669566 to the mixer and play with it.