Hex #008699 or rgb(0,134,153) in RGB space is the tint of cyan. It has hue angle of 187.45 degrees, value = 60 and saturation = 100. #008699 can be obtained by mixing 4 colors: 3 drops of blue, 4 drops of cyan, 1 drop of green, 2 drops of black.
Nearest safe hex - #009999. Below you can see the block with #008699 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #008699 to the mixer and play with it.