Hex #66aa80 or rgb(102,170,128) in RGB space is the tint of teal. It has hue angle of 142.94 degrees, value = 67 and saturation = 40. #66aa80 can be obtained by mixing 4 colors: 2 drops of yellow, 3 drops of cyan, 2 drops of white, 3 drops of black.
Nearest safe hex - #669999. Below you can see the block with #66aa80 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66aa80 to the mixer and play with it.