Hex #401b6b or rgb(64,27,107) in RGB space is the tint of purple. It has hue angle of 267.75 degrees, value = 42 and saturation = 75. #401b6b can be obtained by mixing 3 colors: 2 drops of magenta, 3 drops of blue, 3 drops of black.
Nearest safe hex - #333366. Below you can see the block with #401b6b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #401b6b to the mixer and play with it.