Hex #405b72 or rgb(64,91,114) in RGB space is the tint of blue. It has hue angle of 207.60 degrees, value = 45 and saturation = 44. #405b72 can be obtained by mixing 4 colors: 3 drops of red, 2 drops of blue, 4 drops of cyan, 3 drops of black.
Nearest safe hex - #336666. Below you can see the block with #405b72 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #405b72 to the mixer and play with it.