Hex #66ab88 or rgb(102,171,136) in RGB space is the tint of teal. It has hue angle of 149.57 degrees, value = 67 and saturation = 40. #66ab88 can be obtained by mixing 4 colors: 2 drops of blue, 3 drops of green, 4 drops of white, 1 drop of black.
Nearest safe hex - #669999. Below you can see the block with #66ab88 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66ab88 to the mixer and play with it.