Hex #557cce or rgb(85,124,206) in RGB space is the tint of blue violet. It has hue angle of 220.66 degrees, value = 81 and saturation = 59. #557cce can be obtained by mixing 4 colors: 3 drops of magenta, 4 drops of blue, 4 drops of cyan, 1 drop of white.
Nearest safe hex - #6666cc. Below you can see the block with #557cce color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #557cce to the mixer and play with it.