Hex #669080 or rgb(102,144,128) in RGB space is the tint of teal. It has hue angle of 157.14 degrees, value = 56 and saturation = 29. #669080 can be obtained by mixing 4 colors: 1 drop of cyan, 1 drop of green, 4 drops of white, 4 drops of black.
Nearest safe hex - #669999. Below you can see the block with #669080 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #669080 to the mixer and play with it.