Hex #999cc4 or rgb(153,156,196) in RGB space is the tint of violet. It has hue angle of 235.81 degrees, value = 77 and saturation = 22. #999cc4 can be obtained by mixing 3 colors: 1 drop of red, 4 drops of blue, 5 drops of white.
Nearest safe hex - #9999cc. Below you can see the block with #999cc4 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #999cc4 to the mixer and play with it.