Hex #663d6f or rgb(102,61,111) in RGB space is the tint of purple magenta. It has hue angle of 289.20 degrees, value = 44 and saturation = 45. #663d6f can be obtained by mixing 4 colors: 3 drops of red, 5 drops of blue, 1 drop of white, 1 drop of black.
Nearest safe hex - #663366. Below you can see the block with #663d6f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #663d6f to the mixer and play with it.