Hex #718a9c or rgb(113,138,156) in RGB space is the tint of blue. It has hue angle of 205.12 degrees, value = 61 and saturation = 28. #718a9c can be obtained by mixing 4 colors: 4 drops of yellow, 4 drops of magenta, 5 drops of blue, 5 drops of cyan.
Nearest safe hex - #669999. Below you can see the block with #718a9c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #718a9c to the mixer and play with it.