Hex #172f65 or rgb(23,47,101) in RGB space is the tint of blue violet. It has hue angle of 221.54 degrees, value = 40 and saturation = 77. #172f65 can be obtained by mixing 4 colors: 1 drop of magenta, 4 drops of blue, 1 drop of cyan, 5 drops of black.
Nearest safe hex - #003366. Below you can see the block with #172f65 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #172f65 to the mixer and play with it.