Hex #8b639b or rgb(139,99,155) in RGB space is the tint of purple magenta. It has hue angle of 282.86 degrees, value = 61 and saturation = 36. #8b639b can be obtained by mixing 4 colors: 4 drops of magenta, 3 drops of blue, 2 drops of green, 2 drops of white.
Nearest safe hex - #996699. Below you can see the block with #8b639b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #8b639b to the mixer and play with it.