Hex #a28aa3 or rgb(162,138,163) in RGB space is the tint of magenta. It has hue angle of 297.60 degrees, value = 64 and saturation = 15. #a28aa3 can be obtained by mixing 4 colors: 2 drops of yellow, 2 drops of magenta, 4 drops of blue, 3 drops of white.
Nearest safe hex - #999999. Below you can see the block with #a28aa3 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #a28aa3 to the mixer and play with it.