Hex #804189 or rgb(128,65,137) in RGB space is the tint of magenta. It has hue angle of 292.50 degrees, value = 54 and saturation = 53. #804189 can be obtained by mixing 4 colors: 3 drops of magenta, 2 drops of blue, 2 drops of white, 3 drops of black.
Nearest safe hex - #993399. Below you can see the block with #804189 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #804189 to the mixer and play with it.