Hex #555456 or rgb(85,84,86) in RGB space is the tint of purple. It has hue angle of 270.00 degrees, value = 34 and saturation = 2. #555456 can be obtained by mixing 4 colors: 1 drop of red, 1 drop of magenta, 2 drops of blue, 2 drops of green.
Nearest safe hex - #666666. Below you can see the block with #555456 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #555456 to the mixer and play with it.