Hex #669066 or rgb(102,144,102) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 56 and saturation = 29. #669066 can be obtained by mixing 4 colors: 5 drops of red, 5 drops of cyan, 4 drops of green, 1 drop of white.
Nearest safe hex - #669966. Below you can see the block with #669066 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #669066 to the mixer and play with it.