Hex #89ae90 or rgb(137,174,144) in RGB space is the tint of bluish green. It has hue angle of 131.35 degrees, value = 68 and saturation = 21. #89ae90 can be obtained by mixing 4 colors: 3 drops of yellow, 5 drops of blue, 1 drop of green, 4 drops of white.
Nearest safe hex - #999999. Below you can see the block with #89ae90 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #89ae90 to the mixer and play with it.