Hex #aa57b2 or rgb(170,87,178) in RGB space is the tint of magenta. It has hue angle of 294.73 degrees, value = 70 and saturation = 51. #aa57b2 can be obtained by mixing 4 colors: 1 drop of red, 4 drops of magenta, 4 drops of blue, 3 drops of white.
Nearest safe hex - #996699. Below you can see the block with #aa57b2 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #aa57b2 to the mixer and play with it.