Hex #394f68 or rgb(57,79,104) in RGB space is the tint of blue. It has hue angle of 211.91 degrees, value = 41 and saturation = 45. #394f68 can be obtained by mixing 4 colors: 1 drop of red, 1 drop of magenta, 3 drops of cyan, 4 drops of black.
Nearest safe hex - #336666. Below you can see the block with #394f68 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #394f68 to the mixer and play with it.