Hex #879b9b or rgb(135,155,155) in RGB space is the tint of cyan. It has hue angle of 180.00 degrees, value = 61 and saturation = 13. #879b9b can be obtained by mixing 4 colors: 5 drops of magenta, 3 drops of cyan, 5 drops of green, 4 drops of white.
Nearest safe hex - #999999. Below you can see the block with #879b9b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #879b9b to the mixer and play with it.