Hex #557795 or rgb(85,119,149) in RGB space is the tint of blue. It has hue angle of 208.13 degrees, value = 58 and saturation = 43. #557795 can be obtained by mixing 4 colors: 1 drop of yellow, 3 drops of magenta, 5 drops of cyan, 3 drops of black.
Nearest safe hex - #666699. Below you can see the block with #557795 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #557795 to the mixer and play with it.