Hex #66628e or rgb(102,98,142) in RGB space is the tint of violet. It has hue angle of 245.45 degrees, value = 56 and saturation = 31. #66628e can be obtained by mixing 4 colors: 5 drops of red, 1 drop of magenta, 4 drops of blue, 5 drops of cyan.
Nearest safe hex - #666699. Below you can see the block with #66628e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66628e to the mixer and play with it.