Hex #5d6f74 or rgb(93,111,116) in RGB space is the tint of bluish cian. It has hue angle of 193.04 degrees, value = 45 and saturation = 20. #5d6f74 can be obtained by mixing 4 colors: 2 drops of red, 3 drops of cyan, 2 drops of white, 4 drops of black.
Nearest safe hex - #666666. Below you can see the block with #5d6f74 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5d6f74 to the mixer and play with it.