Mexican Flag - Introduction
The flag of Mexico (Spanish: Bandera de México) is a vertical tricolor of green, white, and red with the national coat of arms charged in the center of the white stripe. The coat of arms has an eagle, holding a serpent in its beak and talon, is perched on top of a prickly pear cactus growing out of rocks in the middle of a lake. A wreath of oak and laurel tied with a ribbon in the national green-white-red colours is below the eagle. The flag's width to length ratio is 4:7
Mexico Flag - Colors
Green: (RGB: 0, 104, 71) (hex code: #006847)
White: (RGB: 255, 255, 255) (hex code: #FFFFFF)
Red: (RGB: 206, 17, 38) (hex code: #CE1126)
Mexico Flag - colors current meaning
Green: signifies hope and prosperity
White: represents peace and harmony
Red: symbolizes the blood of Mexican heroes
Mexico Flag - colors original meaning
Green: represented independence
White: represented Roman Catholic religion
Red: symbolized the union of Spaniards and Mexicans
Mexican Flag - History

Spanish troops led by Agustin de Iturbide and the Mexican insurgent troops of Vicente Guerrero which fought separately during the Mexican War of Independence (1810-1821) were unified to form the 'Army of the Three Guarantees' (Ejercito Trigarante) which consolidated Mexico's independence from Spain. The French Tricolor served as the inspiration for the design of the new flag for the new nation, but the colors were chosen to represent the 'Three Guarantees' - Green symbolized independence, white was for the Roman Catholic religion, and red is for union of Americans and Europeans.
The Mexican Coat of Arms is based on a legend, Huitzilopochtli, the Aztec's supreme deity, instructed the leader of the Aztec people to settle in a place where an eagle landed on a prickly-pear cactus, eating a snake. After years of wandering they found the eagle eating a snake on a on a prickly-pear cactus growing on a swampy island in the Lake Texcoco. They settled there in 1345 and built the great city of Tenochtitlan ("Place of the Prickly Pear Cactus"). It served as the most important Aztec city until it was destroyed by the invading Spanish in 1521. Mexico City is built on the ruins of this ancient metropolis.
Mexican Flag - Facts

The first national flag was officially decreed by Agustín de Iturbide in November 1821 and first officially used in July 1822.
The current national flag was adopted on September 16, 1968, and was confirmed by law on February 24, 1984.
The national Día de la Bandera (Flag Day) celebration occurs on February 24. On this day in 1821, all the factions fighting in the War of Independence joined together to form the Army of the Three Guarantees in response to the Plan de Iguala, which was signed by Vicente Guerrero and Agustín de Iturbide, declaring Mexico officially an independent country.
General Vicente Guerrero was the first military official who swore allegiance to the national flag.
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