Hex #6688cd or rgb(102,136,205) in RGB space is the tint of blue violet. It has hue angle of 220.19 degrees, value = 80 and saturation = 50. #6688cd can be obtained by mixing 4 colors: 1 drop of magenta, 5 drops of blue, 1 drop of cyan, 3 drops of white.
Nearest safe hex - #6699cc. Below you can see the block with #6688cd color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #6688cd to the mixer and play with it.