Iron gray. The color of cast iron ash is very similar to that of cast iron, so it is also called cast iron ash. Whether it is called dark gray or cast iron gray, it is that beautiful dark gray color. When cast iron ash is mixed with different blue colors, it will have unexpected effects. The fresh blue will bring a little melancholy. Choose bright blue such as sapphire and Kong Quelan with iron gray, revealing a touch of intellectual beauty, which is very suitable for exquisite workplace beauty in autumn and winter. Girls who like warm colors can choose red series with iron gray. Bordeaux, rust red, etc. They are all white and have temperament, and they are friendly to yellow skin and black skin. The combination of jujube red, rust red coat and iron gray wool dress gives people a warm and elegant feeling.