Hex #559a80 or rgb(85,154,128) in RGB space is the tint of teal. It has hue angle of 157.39 degrees, value = 60 and saturation = 45. #559a80 can be obtained by mixing 3 colors: 2 drops of yellow, 3 drops of blue, 1 drop of cyan.
Nearest safe hex - #669999. Below you can see the block with #559a80 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #559a80 to the mixer and play with it.