Hex #405975 or rgb(64,89,117) in RGB space is the tint of blue. It has hue angle of 211.70 degrees, value = 46 and saturation = 45. #405975 can be obtained by mixing 4 colors: 1 drop of red, 1 drop of magenta, 3 drops of cyan, 3 drops of black.
Nearest safe hex - #336666. Below you can see the block with #405975 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #405975 to the mixer and play with it.