Hex #66cd91 or rgb(102,205,145) in RGB space is the tint of teal. It has hue angle of 145.05 degrees, value = 80 and saturation = 50. #66cd91 can be obtained by mixing 4 colors: 1 drop of blue, 1 drop of cyan, 4 drops of green, 4 drops of white.
Nearest safe hex - #66cc99. Below you can see the block with #66cd91 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66cd91 to the mixer and play with it.