Hex #66d066 or rgb(102,208,102) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 82 and saturation = 51. #66d066 can be obtained by mixing 4 colors: 4 drops of yellow, 4 drops of cyan, 1 drop of green, 1 drop of black.
Nearest safe hex - #66cc66. Below you can see the block with #66d066 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66d066 to the mixer and play with it.