Hex #558cc7 or rgb(85,140,199) in RGB space is the tint of blue. It has hue angle of 211.05 degrees, value = 78 and saturation = 57. #558cc7 can be obtained by mixing 4 colors: 1 drop of red, 2 drops of magenta, 1 drop of blue, 5 drops of cyan.
Nearest safe hex - #6699cc. Below you can see the block with #558cc7 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #558cc7 to the mixer and play with it.