Hex #8b37a3 or rgb(139,55,163) in RGB space is the tint of purple magenta. It has hue angle of 286.67 degrees, value = 64 and saturation = 66. #8b37a3 can be obtained by mixing 4 colors: 1 drop of red, 4 drops of magenta, 5 drops of blue, 1 drop of white.
Nearest safe hex - #993399. Below you can see the block with #8b37a3 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #8b37a3 to the mixer and play with it.