Hex #558b72 or rgb(85,139,114) in RGB space is the tint of teal. It has hue angle of 152.22 degrees, value = 55 and saturation = 39. #558b72 can be obtained by mixing 4 colors: 1 drop of red, 1 drop of magenta, 2 drops of cyan, 2 drops of green.
Nearest safe hex - #669966. Below you can see the block with #558b72 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #558b72 to the mixer and play with it.