Hex #889399 or rgb(136,147,153) in RGB space is the tint of bluish cian. It has hue angle of 201.18 degrees, value = 60 and saturation = 11. #889399 can be obtained by mixing 4 colors: 3 drops of magenta, 3 drops of blue, 4 drops of green, 5 drops of white.
Nearest safe hex - #999999. Below you can see the block with #889399 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #889399 to the mixer and play with it.