Hex #4d5f78 or rgb(77,95,120) in RGB space is the tint of blue. It has hue angle of 214.88 degrees, value = 47 and saturation = 36. #4d5f78 can be obtained by mixing 4 colors: 1 drop of yellow, 2 drops of magenta, 5 drops of blue, 2 drops of green.
Nearest safe hex - #666666. Below you can see the block with #4d5f78 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4d5f78 to the mixer and play with it.