Hex #879eaa or rgb(135,158,170) in RGB space is the tint of bluish cian. It has hue angle of 200.57 degrees, value = 67 and saturation = 21. #879eaa can be obtained by mixing 4 colors: 5 drops of magenta, 4 drops of cyan, 4 drops of green, 4 drops of white.
Nearest safe hex - #999999. Below you can see the block with #879eaa color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #879eaa to the mixer and play with it.