Hex #668edd or rgb(102,142,221) in RGB space is the tint of blue violet. It has hue angle of 219.83 degrees, value = 87 and saturation = 54. #668edd can be obtained by mixing 2 colors: 2 drops of magenta, 3 drops of cyan.
Nearest safe hex - #6699cc. Below you can see the block with #668edd color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #668edd to the mixer and play with it.