Hex #89a49d or rgb(137,164,157) in RGB space is the tint of greenish cian. It has hue angle of 164.44 degrees, value = 64 and saturation = 16. #89a49d can be obtained by mixing 4 colors: 4 drops of red, 5 drops of cyan, 1 drop of green, 3 drops of white.
Nearest safe hex - #999999. Below you can see the block with #89a49d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #89a49d to the mixer and play with it.