Hex #553485 or rgb(85,52,133) in RGB space is the tint of purple. It has hue angle of 264.44 degrees, value = 52 and saturation = 61. #553485 can be obtained by mixing 4 colors: 3 drops of magenta, 4 drops of blue, 1 drop of green, 1 drop of black.
Nearest safe hex - #663399. Below you can see the block with #553485 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #553485 to the mixer and play with it.