Hex #8b31a3 or rgb(139,49,163) in RGB space is the tint of purple magenta. It has hue angle of 287.37 degrees, value = 64 and saturation = 70. #8b31a3 can be obtained by mixing 4 colors: 5 drops of magenta, 4 drops of blue, 1 drop of white, 1 drop of black.
Nearest safe hex - #993399. Below you can see the block with #8b31a3 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #8b31a3 to the mixer and play with it.