Hex #665f99 or rgb(102,95,153) in RGB space is the tint of violet. It has hue angle of 247.24 degrees, value = 60 and saturation = 38. #665f99 can be obtained by mixing 4 colors: 1 drop of red, 3 drops of magenta, 4 drops of cyan, 2 drops of black.
Nearest safe hex - #666699. Below you can see the block with #665f99 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #665f99 to the mixer and play with it.