Hex #406f8a or rgb(64,111,138) in RGB space is the tint of bluish cian. It has hue angle of 201.89 degrees, value = 54 and saturation = 54. #406f8a can be obtained by mixing 4 colors: 2 drops of blue, 1 drop of cyan, 2 drops of white, 3 drops of black.
Nearest safe hex - #336699. Below you can see the block with #406f8a color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #406f8a to the mixer and play with it.