Hex #4e636f or rgb(78,99,111) in RGB space is the tint of bluish cian. It has hue angle of 201.82 degrees, value = 44 and saturation = 30. #4e636f can be obtained by mixing 4 colors: 1 drop of yellow, 4 drops of blue, 3 drops of white, 5 drops of black.
Nearest safe hex - #666666. Below you can see the block with #4e636f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4e636f to the mixer and play with it.