Hex #809891 or rgb(128,152,145) in RGB space is the tint of greenish cian. It has hue angle of 162.50 degrees, value = 60 and saturation = 16. #809891 can be obtained by mixing 4 colors: 2 drops of yellow, 4 drops of blue, 3 drops of white, 1 drop of black.
Nearest safe hex - #999999. Below you can see the block with #809891 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #809891 to the mixer and play with it.