Hex #899c97 or rgb(137,156,151) in RGB space is the tint of greenish cian. It has hue angle of 164.21 degrees, value = 61 and saturation = 12. #899c97 can be obtained by mixing 4 colors: 2 drops of yellow, 4 drops of blue, 5 drops of white, 2 drops of black.
Nearest safe hex - #999999. Below you can see the block with #899c97 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #899c97 to the mixer and play with it.