Hex #66ac91 or rgb(102,172,145) in RGB space is the tint of teal. It has hue angle of 156.86 degrees, value = 67 and saturation = 41. #66ac91 can be obtained by mixing 4 colors: 3 drops of yellow, 4 drops of blue, 2 drops of cyan, 1 drop of white.
Nearest safe hex - #669999. Below you can see the block with #66ac91 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66ac91 to the mixer and play with it.