Hex #667fcd or rgb(102,127,205) in RGB space is the tint of blue violet. It has hue angle of 225.44 degrees, value = 80 and saturation = 50. #667fcd can be obtained by mixing 4 colors: 1 drop of magenta, 2 drops of blue, 1 drop of cyan, 1 drop of white.
Nearest safe hex - #6666cc. Below you can see the block with #667fcd color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #667fcd to the mixer and play with it.