Hex #66a080 or rgb(102,160,128) in RGB space is the tint of teal. It has hue angle of 146.90 degrees, value = 63 and saturation = 36. #66a080 can be obtained by mixing 4 colors: 1 drop of yellow, 3 drops of red, 5 drops of cyan, 1 drop of green.
Nearest safe hex - #669999. Below you can see the block with #66a080 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66a080 to the mixer and play with it.