Hex #664178 or rgb(102,65,120) in RGB space is the tint of purple magenta. It has hue angle of 280.36 degrees, value = 47 and saturation = 46. #664178 can be obtained by mixing 4 colors: 1 drop of red, 3 drops of magenta, 4 drops of blue, 2 drops of green.
Nearest safe hex - #663366. Below you can see the block with #664178 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #664178 to the mixer and play with it.