Hex #405680 or rgb(64,86,128) in RGB space is the tint of blue violet. It has hue angle of 219.38 degrees, value = 50 and saturation = 50. #405680 can be obtained by mixing 4 colors: 2 drops of red, 3 drops of blue, 2 drops of cyan, 1 drop of black.
Nearest safe hex - #336699. Below you can see the block with #405680 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #405680 to the mixer and play with it.