Hex #66a688 or rgb(102,166,136) in RGB space is the tint of teal. It has hue angle of 151.88 degrees, value = 65 and saturation = 39. #66a688 can be obtained by mixing 4 colors: 5 drops of yellow, 1 drop of magenta, 5 drops of blue, 4 drops of cyan.
Nearest safe hex - #669999. Below you can see the block with #66a688 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66a688 to the mixer and play with it.