Hex #6687d5 or rgb(102,135,213) in RGB space is the tint of blue violet. It has hue angle of 222.16 degrees, value = 84 and saturation = 52. #6687d5 can be obtained by mixing 4 colors: 3 drops of magenta, 2 drops of blue, 4 drops of cyan, 1 drop of white.
Nearest safe hex - #6699cc. Below you can see the block with #6687d5 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #6687d5 to the mixer and play with it.