Hex #80839c or rgb(128,131,156) in RGB space is the tint of violet. It has hue angle of 233.57 degrees, value = 61 and saturation = 18. #80839c can be obtained by mixing 4 colors: 4 drops of magenta, 5 drops of blue, 4 drops of green, 5 drops of white.
Nearest safe hex - #999999. Below you can see the block with #80839c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #80839c to the mixer and play with it.