Hex #405180 or rgb(64,81,128) in RGB space is the tint of blue violet. It has hue angle of 224.06 degrees, value = 50 and saturation = 50. #405180 can be obtained by mixing 3 colors: 1 drop of magenta, 2 drops of blue, 1 drop of green.
Nearest safe hex - #336699. Below you can see the block with #405180 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #405180 to the mixer and play with it.