Hex #406887 or rgb(64,104,135) in RGB space is the tint of blue. It has hue angle of 206.20 degrees, value = 53 and saturation = 53. #406887 can be obtained by mixing 4 colors: 3 drops of red, 5 drops of blue, 3 drops of cyan, 1 drop of green.
Nearest safe hex - #336699. Below you can see the block with #406887 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #406887 to the mixer and play with it.