Red

Red is the color at the long wavelength end of the visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of about 625–750 nanometers. It is a main color in the RGB color model and a mixed color in the CMYK color model.

Red pigment from ochre was one of the first colors used in prehistoric art. The Ancient Egyptians and Mayans colored their faces red for ceremonies. Roman generals wore red to celebrate victories. It was an important color in China, used on early pottery and later on palace gates and walls. In the Renaissance, rich people wore brilliant red clothes dyed with kermes and cochineal. The 1800s saw the first synthetic red dyes, which replaced older dyes.

Red is the color of blood, so it has been linked with big feelings like passion, love, joy, and anger. In Europe and the United States, red is often seen as a warm, lively color. In China, India, and many Asian countries, red means happiness and good luck.

Shades and variations

Main article: Shades of red

Red can look different depending on how bright it is, how strong it is, and how it mixes with other colors. When red mixes with white, it makes a lighter color called a tint. When it mixes with black, it makes a darker color called a shade. There are many interesting types of red. For example, cardinal is named after the bright red color worn by Catholic cardinals. Pink is a very light, pale form of red. Vermilion is a red color that leans toward orange and is used in things like sindoor, a red powder worn by some Hindu women in India. Ruby is the deep red color found in ruby gemstones.

In science and nature

Our eyes see red when looking at light with a wavelength between about 625 and 740 nanometers. Red is a primary color in the RGB color model. It is also one of the three primary colors in traditional RYB color theory, along with blue and yellow.

Red light helps with night vision because the special cells in our eyes are not sensitive to red. In nature, red appears in many places. For example, Mars looks reddish because of iron oxide on its surface. The red glow of a sunset happens because blue and green light scatters away in the atmosphere.

History and art

See also: History of red

People have used the color red for thousands of years. In the past, they made red paint from natural things like ochre, a kind of colorful clay. Paintings of animals in caves, such as those in Cave of Altamira in Spain, used red ochre to make the pictures stand out.

In many cultures, red has had special meanings. The ancient Egyptians used red to represent life and health. The Romans wore red clothes for important days and battles. In the Middle Ages, red became a color for important people and for religious ideas, like the blood of Christ. Kings and church leaders often wore red to show their importance.

Later, red took on new meanings. It became a symbol for change and fighting for rights. Workers used red flags to show their efforts, and it became linked to movements working for fairness and equality in many parts of the world.

Symbolism

Red is a color that means many things in different cultures. It is often linked with courage and giving. In western countries, red has been a symbol of sacrifice, because it is the color of blood. During the Middle Ages, leaders of the Roman Catholic Church wore red to show the blood of Christ and Christian martyrs. The red cross on a white field, known as the St. George's Cross, was used by Christian soldiers during the First Crusade. This symbol later became the Flag of England and part of the Union Flag of the United Kingdom.

Red also means passion, heat, and strength. It is the color most linked with love, but also with anger, aggression, and war. In ancient Rome, red was linked to Mars, the god of war, because of the red color of the planet Mars. Red is a color of warning and danger. It is used in flags, on stop signs, and in sports to show important alerts or rules. For example, in football, a red card means a player has broken a serious rule and must leave the game.

Because red stands out clearly, it is often used to draw attention. It is worn by lifeguards, celebrities, and others who need to be easily seen. Red is also used in advertising to make products noticed, although some people find it hard to read text in red.

In religion

In Christianity, red is linked to the blood of Christ and the sacrifice of martyrs. It is also used in the Roman Catholic Church for special occasions like pentecost and to honor important religious figures.

In Buddhism, red is one of the colors believed to have come from the Buddha when he reached nirvana. It stands for good qualities like wisdom and fortune. In Shinto, the red color of temple gates, called torii, marks the entry to sacred places. In Taoism and Chinese folk religion, red can represent positive energy and good luck. Hinduism also values red for its connection to Lakshmi, the goddess of wealth and beauty.

Military uses

The color red has been important in military uniforms for a long time. In 1645, the English Parliament's New Model Army started wearing red coats. This made British soldiers famous as "red coats." This tradition continued until the start of the First World War in 1914. Today, some British army units, like the Foot Guards and Life Guards, still wear scarlet uniforms for special ceremonies.

Many other countries that were once part of the British Empire also use scarlet in some of their military uniforms. For example, the Royal Canadian Mounted Police wear a red uniform called the Red Serge. It was inspired by British Army uniforms. The color red is also used in military training to represent opposing forces. This leads to terms like "red team" for challengers in exercises.

In sports

The first team sport to use red uniforms was chariot racing in the late Roman Empire. One driver wore red and the other wore white. Later, more teams were added in other colors.

Today, many sports teams wear red. Red and blue are common colors in sports. Some national teams wear red because of their flags. Spain's association football team is called La Furia Roja, meaning "The Red Fury." Belgium's football team is called Rode Duivels, meaning "Red Devils." Many club association football teams wear red, like Bayern Munich, Benfica, Liverpool, Manchester United, and Roma. A red penalty card means a player must leave the game.

In motor racing, red is linked with Italy. Cars from teams like Alfa Romeo, Maserati, Lancia, Ferrari, and Abarth are painted a special red called rosso corsa. Ferrari still uses this red color. In Canada and the United States, many teams in baseball, hockey, football, and basketball have red in their uniforms and logos. In boxing, red is a common color for gloves. In martial arts, a red belt shows that a person is very skilled.

On flags

See also: Red flag (politics)

Red is a very common color used on flags from many countries around the world. The British flag has red, white, and blue. The red comes from the cross of Saint George and the saltire of Saint Patrick. Many other countries such as the United States, Australia, New Zealand, and Fiji also use red on their flags, often because of their history with Britain.

Red is also found on flags of many former Spanish colonies like Mexico, Colombia, and Venezuela. In some places, red has special meanings. For example, the red on the flag of Nepal stands for the country's floral emblem, the rhododendron. Red can also be used to show important meanings or warnings on flags.

In politics

In 18th-century Europe, red was often linked to royalty and power. Important figures like the Pope and soldiers in armies such as the British Army wore red clothing.

Later, red became a symbol of freedom and revolution. During times of big changes like the French Revolution, red was used to show support for new ideas and liberty. In the 19th and 20th centuries, red became tied to movements fighting for workers' rights and social change. Many parties around the world that aimed to improve life for ordinary people chose red as their color. Even today, red is widely used by political groups that support these ideas.

In the United States, the term "red states" refers to states that typically vote for Republican candidates, while "blue states" vote for Democrats. This way of describing elections started after the 2000 presidential election.

Social and special interest groups

Names like Red Club, Red Carpet, Red Cottbus, and Club Red often sound fun and exciting. The Red Hat Society is a group for women aged 50 and over, started in 1998. The color red is also used to show that something is important, as seen in groups like the Red Cross for helping people, the Red Hot Organization for supporting those with health challenges, and the Red List of Threatened Species by the IUCN. In some places, the word "red" is used to describe the indigenous peoples of the Americas.

Idioms

Red is used in many everyday expressions to describe feelings and situations. For example, "to see red" means to become very angry. "To have red ears or a red face" means to feel embarrassed. Another fun expression is "to paint the town red," which means to enjoy a lively evening with friends.

Red is also used to give warnings or draw attention. "To raise a red flag" means to point out a problem. "Like a red rag to a bull" describes something that makes someone very angry. A red letter day is a special occasion, just like rolling out the red carpet to welcome an important guest.