Hex #6646a2 or rgb(102,70,162) in RGB space is the tint of purple violet. It has hue angle of 260.87 degrees, value = 64 and saturation = 57. #6646a2 can be obtained by mixing 4 colors: 4 drops of magenta, 4 drops of blue, 1 drop of cyan, 1 drop of green.
Nearest safe hex - #663399. Below you can see the block with #6646a2 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #6646a2 to the mixer and play with it.