Hex #666daa or rgb(102,109,170) in RGB space is the tint of violet. It has hue angle of 233.82 degrees, value = 67 and saturation = 40. #666daa can be obtained by mixing 4 colors: 1 drop of red, 1 drop of magenta, 1 drop of blue, 2 drops of cyan.
Nearest safe hex - #666699. Below you can see the block with #666daa color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #666daa to the mixer and play with it.