Hex #556e9c or rgb(85,110,156) in RGB space is the tint of blue violet. It has hue angle of 218.87 degrees, value = 61 and saturation = 46. #556e9c can be obtained by mixing 4 colors: 3 drops of red, 5 drops of blue, 3 drops of cyan, 1 drop of white.
Nearest safe hex - #666699. Below you can see the block with #556e9c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #556e9c to the mixer and play with it.