Hex #999baa or rgb(153,155,170) in RGB space is the tint of violet. It has hue angle of 232.94 degrees, value = 67 and saturation = 10. #999baa can be obtained by mixing 4 colors: 3 drops of red, 1 drop of blue, 3 drops of cyan, 3 drops of white.
Nearest safe hex - #999999. Below you can see the block with #999baa color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #999baa to the mixer and play with it.