Hex #8b37b3 or rgb(139,55,179) in RGB space is the tint of purple magenta. It has hue angle of 280.65 degrees, value = 70 and saturation = 69. #8b37b3 can be obtained by mixing 3 colors: 5 drops of magenta, 5 drops of blue, 1 drop of white.
Nearest safe hex - #9933cc. Below you can see the block with #8b37b3 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #8b37b3 to the mixer and play with it.