Hex #899190 or rgb(137,145,144) in RGB space is the tint of cyan. It has hue angle of 172.50 degrees, value = 57 and saturation = 6. #899190 can be obtained by mixing 4 colors: 3 drops of magenta, 2 drops of blue, 4 drops of green, 4 drops of white.
Nearest safe hex - #999999. Below you can see the block with #899190 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #899190 to the mixer and play with it.