Hex #404156 or rgb(64,65,86) in RGB space is the tint of violet. It has hue angle of 237.27 degrees, value = 34 and saturation = 26. #404156 can be obtained by mixing 4 colors: 1 drop of yellow, 1 drop of red, 4 drops of blue, 2 drops of black.
Nearest safe hex - #333366. Below you can see the block with #404156 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #404156 to the mixer and play with it.