Hex #405563 or rgb(64,85,99) in RGB space is the tint of blue. It has hue angle of 204.00 degrees, value = 39 and saturation = 35. #405563 can be obtained by mixing 4 colors: 3 drops of red, 1 drop of blue, 4 drops of cyan, 4 drops of black.
Nearest safe hex - #336666. Below you can see the block with #405563 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #405563 to the mixer and play with it.