Hex #407a8e or rgb(64,122,142) in RGB space is the tint of bluish cian. It has hue angle of 195.38 degrees, value = 56 and saturation = 55. #407a8e can be obtained by mixing 4 colors: 1 drop of magenta, 4 drops of cyan, 2 drops of white, 5 drops of black.
Nearest safe hex - #336699. Below you can see the block with #407a8e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #407a8e to the mixer and play with it.