Hex #667eb3 or rgb(102,126,179) in RGB space is the tint of blue violet. It has hue angle of 221.30 degrees, value = 70 and saturation = 43. #667eb3 can be obtained by mixing 4 colors: 2 drops of red, 2 drops of magenta, 1 drop of blue, 5 drops of cyan.
Nearest safe hex - #6666cc. Below you can see the block with #667eb3 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #667eb3 to the mixer and play with it.