Hex #178174 or rgb(23,129,116) in RGB space is the tint of cyan. It has hue angle of 172.64 degrees, value = 51 and saturation = 82. #178174 can be obtained by mixing 3 colors: 1 drop of yellow, 5 drops of cyan, 5 drops of black.
Nearest safe hex - #009966. Below you can see the block with #178174 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #178174 to the mixer and play with it.