Hex #551e72 or rgb(85,30,114) in RGB space is the tint of purple magenta. It has hue angle of 279.29 degrees, value = 45 and saturation = 74. #551e72 can be obtained by mixing 4 colors: 1 drop of red, 3 drops of magenta, 5 drops of blue, 3 drops of black.
Nearest safe hex - #663366. Below you can see the block with #551e72 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #551e72 to the mixer and play with it.