Hex #553c80 or rgb(85,60,128) in RGB space is the tint of purple violet. It has hue angle of 262.06 degrees, value = 50 and saturation = 53. #553c80 can be obtained by mixing 4 colors: 4 drops of magenta, 5 drops of blue, 2 drops of green, 1 drop of black.
Nearest safe hex - #663399. Below you can see the block with #553c80 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #553c80 to the mixer and play with it.