Hex #66609f or rgb(102,96,159) in RGB space is the tint of violet. It has hue angle of 245.71 degrees, value = 62 and saturation = 40. #66609f can be obtained by mixing 4 colors: 5 drops of magenta, 5 drops of cyan, 1 drop of white, 4 drops of black.
Nearest safe hex - #666699. Below you can see the block with #66609f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66609f to the mixer and play with it.