Hex #175474 or rgb(23,84,116) in RGB space is the tint of bluish cian. It has hue angle of 200.65 degrees, value = 45 and saturation = 80. #175474 can be obtained by mixing 4 colors: 1 drop of red, 3 drops of blue, 3 drops of cyan, 4 drops of black.
Nearest safe hex - #006666. Below you can see the block with #175474 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #175474 to the mixer and play with it.