Hex #174e65 or rgb(23,78,101) in RGB space is the tint of bluish cian. It has hue angle of 197.69 degrees, value = 40 and saturation = 77. #174e65 can be obtained by mixing 4 colors: 1 drop of red, 2 drops of blue, 3 drops of cyan, 5 drops of black.
Nearest safe hex - #006666. Below you can see the block with #174e65 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #174e65 to the mixer and play with it.