Hex #899ca4 or rgb(137,156,164) in RGB space is the tint of bluish cian. It has hue angle of 197.78 degrees, value = 64 and saturation = 16. #899ca4 can be obtained by mixing 4 colors: 2 drops of magenta, 3 drops of blue, 3 drops of green, 5 drops of white.
Nearest safe hex - #999999. Below you can see the block with #899ca4 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #899ca4 to the mixer and play with it.