Flag of Colorado (US state)
- Flag Type: US States
- Proportions (official): 2:3
- Official name: State of Colorado
- Local name: Colorado
- Capital: Denver
- Large cities: Denver, Colorado Springs, Aurora
- Population: 5 877 610 (2024)
- Area (km²): 269 601
- Highest point: Mount Elbert (4,399 m)
- Lowest point: Arikaree River (1,011 m)
- Dialing code: +1 (303, 719, 720, 970)
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Description
The flag of the state of Colorado, adopted in 1911, is a masterpiece of simple and powerful design. Unlike many other state flags that rely on complex seals, Colorado's flag is instantly recognizable and visually striking. Its design brilliantly captures the essence of the state, embodying its stunning natural landscape, its mineral wealth, and its Spanish-derived name. The Colorado flag is a beloved symbol and a testament to effective vexillology.
Flag Design, Symbolism, and Colors
The Colorado flag consists of three horizontal stripes and a prominent central emblem.
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The Stripes: The flag has three equal-width horizontal stripes. The top and bottom stripes are a vibrant blue, symbolizing the clear, expansive skies of the state and the majestic Rocky Mountains. The middle stripe is white, representing the snow-capped mountains of the Rockies, which are a defining feature of the Colorado landscape. 
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The "C" and the Gold Disk: A large, stylized letter "C" in red is located in the center of the flag. This 'C' stands for Colorado. Its red color is a direct reference to the state's name, which is Spanish for "colored red," a nod to the reddish earth and rivers found throughout the region. Inside the 'C' is a gold disk, symbolizing the state's abundant sunshine and its rich history of gold mining, which played a pivotal role in its development. 
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Dimensions: The official law specifies that the central letter 'C' should have a height that is two-thirds the width of the flag. The gold disk's diameter is equal to the width of the central white stripe. The ratio of the flag's width to its length is generally 2:3. 
A Brief History of the Flag's Creation and Adoption
The creation of the Colorado flag was a deliberate effort to design a simple yet meaningful symbol.
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The Designer (1911): The flag was designed by Andrew Carlisle Johnson, an artist and member of the Colorado Society of the Sons of the American Revolution. He created the design in response to a growing desire for a distinct and recognizable state banner. 
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Official Adoption: The design was officially adopted by the Colorado General Assembly on June 5, 1911. 
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Standardization (1929 and 1964): After its initial adoption, there were some inconsistencies in how the flag was manufactured, particularly with the colors and the size of the central emblem. To address this, the legislature passed additional laws. A 1929 act legally defined the specific shades of blue and red, and a 1964 law further clarified the dimensions of the 'C' and the gold disk, ensuring all flags produced would be consistent with the original intent. 
Historical Context and the State of Colorado
The Colorado flag's symbolism is deeply rooted in the state's geography and history. The name "Colorado" itself, derived from the Spanish for "colored red," was first used by early Spanish explorers to describe the muddy waters of the Colorado River. The flag's red 'C' and the blue and white stripes visually tell this story, representing the red earth and the majestic, snow-capped mountains. The gold disk is a powerful reminder of the state’s famous mining booms and its nickname, "The Centennial State," which it earned by joining the Union in 1876, 100 years after the Declaration of Independence. The flag is a modern and clean emblem for a state with a rugged and storied past.
Significance for Residents
For residents of Colorado, the flag is a source of immense pride. Its design is so simple and strong that it has become an iconic symbol of the state's identity. It represents the breathtaking natural beauty of the Rocky Mountains, the sunny climate, and the pioneering spirit of those who came to seek fortune in its gold-rich lands. The flag’s clean, modern aesthetic makes it a beloved symbol that is widely displayed and recognized, fostering a strong sense of community and regional identity.
Interesting Facts
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The Colorado flag is one of the most praised state flags in the United States by vexillologists (flag experts) for its clean, simple, and meaningful design. In a 2001 survey, it was ranked as the 5th best-designed flag among all U.S. and Canadian state/provincial flags. 
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The designer, Andrew Carlisle Johnson, originally intended the 'C' to be yellow. However, the official legislation specified it as red. The gold disk inside was a later addition to symbolize the state's sunshine and gold. 
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The flag is one of the few state flags that does not feature the state seal, which is a major factor in its high ranking among vexillologists. 
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The colors of the flag are often linked to the state's nickname, "The Colorful State," due to the vast array of natural beauty from its snow-capped peaks (white) to its blue skies and red canyons. 
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While the 'C' is a simple letter, its stylization—the way it is broken up by the white stripe—gives it a distinctive look that is unique to Colorado's flag. 
  
 In the demonstration images, full-size flags are shown with proportions of 2:3, and hand-held flags with proportions of 1:2.
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