Hex #556272 or rgb(85,98,114) in RGB space is the tint of blue. It has hue angle of 213.10 degrees, value = 45 and saturation = 25. #556272 can be obtained by mixing 4 colors: 1 drop of yellow, 2 drops of magenta, 4 drops of blue, 2 drops of green.
Nearest safe hex - #666666. Below you can see the block with #556272 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #556272 to the mixer and play with it.