Hex #8999b7 or rgb(137,153,183) in RGB space is the tint of blue violet. It has hue angle of 219.13 degrees, value = 72 and saturation = 25. #8999b7 can be obtained by mixing 4 colors: 2 drops of magenta, 3 drops of cyan, 5 drops of white, 3 drops of black.
Nearest safe hex - #9999cc. Below you can see the block with #8999b7 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #8999b7 to the mixer and play with it.