Hex #006660 or rgb(0,102,96) in RGB space is the tint of cyan. It has hue angle of 176.47 degrees, value = 40 and saturation = 100. #006660 can be obtained by mixing 4 colors: 3 drops of blue, 1 drop of cyan, 2 drops of green, 2 drops of black.
Nearest safe hex - #006666. Below you can see the block with #006660 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #006660 to the mixer and play with it.