Hex #666299 or rgb(102,98,153) in RGB space is the tint of violet. It has hue angle of 244.36 degrees, value = 60 and saturation = 36. #666299 can be obtained by mixing 4 colors: 4 drops of red, 2 drops of magenta, 4 drops of blue, 5 drops of cyan.
Nearest safe hex - #666699. Below you can see the block with #666299 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #666299 to the mixer and play with it.