Hex #66d799 or rgb(102,215,153) in RGB space is the tint of teal. It has hue angle of 147.08 degrees, value = 84 and saturation = 53. #66d799 can be obtained by mixing 4 colors: 3 drops of yellow, 5 drops of cyan, 1 drop of white, 1 drop of black.
Nearest safe hex - #66cc99. Below you can see the block with #66d799 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66d799 to the mixer and play with it.