Hex #404f80 or rgb(64,79,128) in RGB space is the tint of blue violet. It has hue angle of 225.94 degrees, value = 50 and saturation = 50. #404f80 can be obtained by mixing 3 colors: 3 drops of magenta, 4 drops of cyan, 5 drops of black.
Nearest safe hex - #336699. Below you can see the block with #404f80 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #404f80 to the mixer and play with it.