The Pittsburgh Steelers team colors were originally part of the logo for the American Iron and Steel Institute. It features a circle around three four-pointed geometric shapes called hypocycloids in yellow, red and blue. Those colors represent the three materials used to make steel: yellow for coal, red for iron ore and blue for steel scrap.
The team’s founder, Art Rooney, said he chose these hues because they were distinctive and would make the team easy to spot on the field. The Steelers have one of the most recognizable color schemes in all of sports. They have become synonymous with the team and the city. https://alllosangelespaintingcompany.com/2023/01/sherwin-williams-san-francisco-49ers-paint-colors/