Hex #553a7d or rgb(85,58,125) in RGB space is the tint of purple. It has hue angle of 264.18 degrees, value = 49 and saturation = 54. #553a7d can be obtained by mixing 4 colors: 3 drops of magenta, 5 drops of blue, 2 drops of white, 5 drops of black.
Nearest safe hex - #663366. Below you can see the block with #553a7d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #553a7d to the mixer and play with it.