Hex #505a65 or rgb(80,90,101) in RGB space is the tint of blue. It has hue angle of 211.43 degrees, value = 40 and saturation = 21. #505a65 can be obtained by mixing 4 colors: 5 drops of magenta, 3 drops of cyan, 4 drops of green, 4 drops of black.
Nearest safe hex - #666666. Below you can see the block with #505a65 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #505a65 to the mixer and play with it.