Hex #55587b or rgb(85,88,123) in RGB space is the tint of violet. It has hue angle of 235.26 degrees, value = 48 and saturation = 31. #55587b can be obtained by mixing 4 colors: 2 drops of red, 5 drops of blue, 1 drop of green, 1 drop of white.
Nearest safe hex - #666666. Below you can see the block with #55587b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55587b to the mixer and play with it.