What does the color blue on the United States flag symbolize?

The color blue on the United States flag symbolizes justice. This symbolism is part of the broader interpretation of the colors of the flag as outlined by Charles Thomson, the Secretary of the Continental Congress. When the flag was adopted, the colors red, white, and blue were associated with specific values: red represents valor and bravery, white signifies purity and innocence, and blue stands for vigilance, perseverance, and justice. The emphasis on justice reflects the American ideal of fairness and the pursuit of equality, which are foundational principles of the nation. Understanding this symbolism helps to appreciate the deeper meanings embedded in national symbols like the flag.