Hex #779899 or rgb(119,152,153) in RGB space is the tint of cyan. It has hue angle of 181.76 degrees, value = 60 and saturation = 22. #779899 can be obtained by mixing 4 colors: 2 drops of magenta, 4 drops of blue, 4 drops of green, 5 drops of white.
Nearest safe hex - #669999. Below you can see the block with #779899 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #779899 to the mixer and play with it.