Hex #66c591 or rgb(102,197,145) in RGB space is the tint of teal. It has hue angle of 147.16 degrees, value = 77 and saturation = 48. #66c591 can be obtained by mixing 4 colors: 3 drops of yellow, 1 drop of red, 1 drop of blue, 5 drops of cyan.
Nearest safe hex - #66cc99. Below you can see the block with #66c591 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66c591 to the mixer and play with it.