Hex #17919b or rgb(23,145,155) in RGB space is the tint of cyan. It has hue angle of 184.55 degrees, value = 61 and saturation = 85. #17919b can be obtained by mixing 4 colors: 1 drop of red, 4 drops of blue, 4 drops of cyan, 2 drops of green.
Nearest safe hex - #009999. Below you can see the block with #17919b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #17919b to the mixer and play with it.