Hex #99addd or rgb(153,173,221) in RGB space is the tint of blue violet. It has hue angle of 222.35 degrees, value = 87 and saturation = 31. #99addd can be obtained by mixing 4 colors: 1 drop of magenta, 3 drops of blue, 1 drop of cyan, 5 drops of white.
Nearest safe hex - #9999cc. Below you can see the block with #99addd color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99addd to the mixer and play with it.