Hex #666883 or rgb(102,104,131) in RGB space is the tint of violet. It has hue angle of 235.86 degrees, value = 51 and saturation = 22. #666883 can be obtained by mixing 4 colors: 1 drop of red, 4 drops of blue, 5 drops of white, 5 drops of black.
Nearest safe hex - #666699. Below you can see the block with #666883 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #666883 to the mixer and play with it.