Hex #5578aa or rgb(85,120,170) in RGB space is the tint of blue. It has hue angle of 215.29 degrees, value = 67 and saturation = 50. #5578aa can be obtained by mixing 4 colors: 3 drops of magenta, 5 drops of cyan, 1 drop of white, 3 drops of black.
Nearest safe hex - #666699. Below you can see the block with #5578aa color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5578aa to the mixer and play with it.