Hex #008a86 or rgb(0,138,134) in RGB space is the tint of cyan. It has hue angle of 178.26 degrees, value = 54 and saturation = 100. #008a86 can be obtained by mixing 4 colors: 1 drop of blue, 3 drops of cyan, 1 drop of green, 2 drops of black.
Nearest safe hex - #009999. Below you can see the block with #008a86 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #008a86 to the mixer and play with it.