The colors of the Mexican flag have deep meanings that have evolved over time. Today, the green stripe symbolizes hope and prosperity, the white stripe represents unity and purity of ideals, and the red stripe stands for the blood of national heroes who sacrificed their lives for Mexico's independence and freedom.

Originally, these colors were linked to the "Three Guarantees" of the Plan of Iguala in 1821: green stood for independence, white for the Catholic religion, and red for union between Europeans and indigenous peoples. Over time, their meaning shifted from these historical associations to expressing national pride and core values such as hope (green), unity (white), and sacrifice (red).

Thus, the Mexican flag's colors collectively reflect the country's past struggles for independence, its cultural unity, and the hope for a prosperous future.