Hex #553b79 or rgb(85,59,121) in RGB space is the tint of purple. It has hue angle of 265.16 degrees, value = 47 and saturation = 51. #553b79 can be obtained by mixing 3 colors: 4 drops of magenta, 3 drops of cyan, 5 drops of black.
Nearest safe hex - #663366. Below you can see the block with #553b79 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #553b79 to the mixer and play with it.