Hex #66a466 or rgb(102,164,102) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 64 and saturation = 38. #66a466 can be obtained by mixing 4 colors: 4 drops of yellow, 3 drops of blue, 2 drops of cyan, 1 drop of black.
Nearest safe hex - #669966. Below you can see the block with #66a466 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66a466 to the mixer and play with it.