Hex #708a8b or rgb(112,138,139) in RGB space is the tint of cyan. It has hue angle of 182.22 degrees, value = 55 and saturation = 19. #708a8b can be obtained by mixing 4 colors: 3 drops of magenta, 4 drops of blue, 5 drops of green, 4 drops of white.
Nearest safe hex - #669999. Below you can see the block with #708a8b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #708a8b to the mixer and play with it.