Hex #768789 or rgb(118,135,137) in RGB space is the tint of cyan. It has hue angle of 186.32 degrees, value = 54 and saturation = 14. #768789 can be obtained by mixing 4 colors: 1 drop of red, 2 drops of cyan, 5 drops of white, 5 drops of black.
Nearest safe hex - #669999. Below you can see the block with #768789 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #768789 to the mixer and play with it.