Hex #778883 or rgb(119,136,131) in RGB space is the tint of greenish cian. It has hue angle of 162.35 degrees, value = 53 and saturation = 13. #778883 can be obtained by mixing 4 colors: 2 drops of yellow, 4 drops of blue, 5 drops of white, 4 drops of black.
Nearest safe hex - #669999. Below you can see the block with #778883 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #778883 to the mixer and play with it.