Hex #66a066 or rgb(102,160,102) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 63 and saturation = 36. #66a066 can be obtained by mixing 4 colors: 4 drops of yellow, 4 drops of cyan, 2 drops of white, 5 drops of black.
Nearest safe hex - #669966. Below you can see the block with #66a066 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66a066 to the mixer and play with it.