Hex #553389 or rgb(85,51,137) in RGB space is the tint of purple. It has hue angle of 263.72 degrees, value = 54 and saturation = 63. #553389 can be obtained by mixing 4 colors: 5 drops of magenta, 4 drops of blue, 2 drops of cyan, 4 drops of black.
Nearest safe hex - #663399. Below you can see the block with #553389 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #553389 to the mixer and play with it.