Hex #718d8e or rgb(113,141,142) in RGB space is the tint of cyan. It has hue angle of 182.07 degrees, value = 56 and saturation = 20. #718d8e can be obtained by mixing 4 colors: 3 drops of magenta, 2 drops of cyan, 3 drops of green, 1 drop of white.
Nearest safe hex - #669999. Below you can see the block with #718d8e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #718d8e to the mixer and play with it.