Hex #553c55 or rgb(85,60,85) in RGB space is the tint of magenta. It has hue angle of 300.00 degrees, value = 33 and saturation = 29. #553c55 can be obtained by mixing 4 colors: 2 drops of red, 3 drops of blue, 2 drops of white, 5 drops of black.
Nearest safe hex - #663366. Below you can see the block with #553c55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #553c55 to the mixer and play with it.