Hex #66bd88 or rgb(102,189,136) in RGB space is the tint of teal. It has hue angle of 143.45 degrees, value = 74 and saturation = 46. #66bd88 can be obtained by mixing 3 colors: 1 drop of blue, 2 drops of green, 2 drops of white.
Nearest safe hex - #66cc99. Below you can see the block with #66bd88 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66bd88 to the mixer and play with it.