Hex #394656 or rgb(57,70,86) in RGB space is the tint of blue. It has hue angle of 213.10 degrees, value = 34 and saturation = 34. #394656 can be obtained by mixing 4 colors: 4 drops of magenta, 5 drops of blue, 5 drops of green, 4 drops of black.
Nearest safe hex - #333366. Below you can see the block with #394656 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #394656 to the mixer and play with it.