Hex #55185f or rgb(85,24,95) in RGB space is the tint of purple magenta. It has hue angle of 291.55 degrees, value = 37 and saturation = 75. #55185f can be obtained by mixing 4 colors: 1 drop of red, 2 drops of magenta, 3 drops of blue, 3 drops of black.
Nearest safe hex - #660066. Below you can see the block with #55185f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55185f to the mixer and play with it.