Hex #718585 or rgb(113,133,133) in RGB space is the tint of cyan. It has hue angle of 180.00 degrees, value = 52 and saturation = 15. #718585 can be obtained by mixing 4 colors: 2 drops of magenta, 2 drops of blue, 3 drops of green, 2 drops of white.
Nearest safe hex - #669999. Below you can see the block with #718585 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #718585 to the mixer and play with it.