Silver gray belongs to colorless system in color, and colorless system is universal color, which can match all colors.
The key depends on what effect and style you want:
You should be dazzling, and the saturation of gold, red, green and orange is strong;
You should be noble, or ambiguous with purple;
You should take white, beige and blue as the main colors, simple and elegant;
You want silver, gray and black business.