Hex #008989 or rgb(0,137,137) in RGB space is the tint of cyan. It has hue angle of 180.00 degrees, value = 54 and saturation = 100. #008989 can be obtained by mixing 3 colors: 5 drops of blue, 2 drops of cyan, 3 drops of green.
Nearest safe hex - #009999. Below you can see the block with #008989 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #008989 to the mixer and play with it.