Hex #747f7c or rgb(116,127,124) in RGB space is the tint of greenish cian. It has hue angle of 163.64 degrees, value = 50 and saturation = 9. #747f7c can be obtained by mixing 4 colors: 1 drop of yellow, 2 drops of blue, 4 drops of white, 4 drops of black.
Nearest safe hex - #666666. Below you can see the block with #747f7c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #747f7c to the mixer and play with it.