Hex #15316b or rgb(21,49,107) in RGB space is the tint of blue violet. It has hue angle of 220.47 degrees, value = 42 and saturation = 80. #15316b can be obtained by mixing 4 colors: 1 drop of magenta, 5 drops of blue, 1 drop of cyan, 5 drops of black.
Nearest safe hex - #003366. Below you can see the block with #15316b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #15316b to the mixer and play with it.