Hex #557572 or rgb(85,117,114) in RGB space is the tint of cyan. It has hue angle of 174.38 degrees, value = 46 and saturation = 27. #557572 can be obtained by mixing 4 colors: 2 drops of red, 5 drops of blue, 3 drops of green, 2 drops of white.
Nearest safe hex - #666666. Below you can see the block with #557572 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #557572 to the mixer and play with it.