Hex #809690 or rgb(128,150,144) in RGB space is the tint of greenish cian. It has hue angle of 163.64 degrees, value = 59 and saturation = 15. #809690 can be obtained by mixing 4 colors: 3 drops of magenta, 3 drops of blue, 5 drops of green, 5 drops of white.
Nearest safe hex - #999999. Below you can see the block with #809690 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #809690 to the mixer and play with it.