Hex #557e6c or rgb(85,126,108) in RGB space is the tint of teal. It has hue angle of 153.66 degrees, value = 49 and saturation = 33. #557e6c can be obtained by mixing 4 colors: 3 drops of yellow, 2 drops of magenta, 5 drops of cyan, 5 drops of black.
Nearest safe hex - #666666. Below you can see the block with #557e6c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #557e6c to the mixer and play with it.