Hex #407e9a or rgb(64,126,154) in RGB space is the tint of bluish cian. It has hue angle of 198.67 degrees, value = 60 and saturation = 58. #407e9a can be obtained by mixing 4 colors: 4 drops of blue, 3 drops of cyan, 4 drops of white, 5 drops of black.
Nearest safe hex - #336699. Below you can see the block with #407e9a color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #407e9a to the mixer and play with it.