Hex #778488 or rgb(119,132,136) in RGB space is the tint of bluish cian. It has hue angle of 194.12 degrees, value = 53 and saturation = 13. #778488 can be obtained by mixing 4 colors: 2 drops of red, 3 drops of cyan, 5 drops of white, 5 drops of black.
Nearest safe hex - #669999. Below you can see the block with #778488 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #778488 to the mixer and play with it.