Hex #553f64 or rgb(85,63,100) in RGB space is the tint of purple. It has hue angle of 275.68 degrees, value = 39 and saturation = 37. #553f64 can be obtained by mixing 4 colors: 4 drops of magenta, 3 drops of blue, 3 drops of green, 2 drops of black.
Nearest safe hex - #663366. Below you can see the block with #553f64 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #553f64 to the mixer and play with it.