Hex #5d6a7c or rgb(93,106,124) in RGB space is the tint of blue. It has hue angle of 214.84 degrees, value = 49 and saturation = 25. #5d6a7c can be obtained by mixing 3 colors: 2 drops of blue, 4 drops of white, 5 drops of black.
Nearest safe hex - #666666. Below you can see the block with #5d6a7c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5d6a7c to the mixer and play with it.