Hex #66357d or rgb(102,53,125) in RGB space is the tint of purple magenta. It has hue angle of 280.83 degrees, value = 49 and saturation = 58. #66357d can be obtained by mixing 4 colors: 4 drops of magenta, 4 drops of blue, 2 drops of white, 5 drops of black.
Nearest safe hex - #663366. Below you can see the block with #66357d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66357d to the mixer and play with it.