Hex #784d8c or rgb(120,77,140) in RGB space is the tint of purple magenta. It has hue angle of 280.95 degrees, value = 55 and saturation = 45. #784d8c can be obtained by mixing 4 colors: 4 drops of magenta, 4 drops of blue, 4 drops of white, 5 drops of black.
Nearest safe hex - #666699. Below you can see the block with #784d8c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #784d8c to the mixer and play with it.