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Brown

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Brown is a color that many people think of as a dark, desaturated shade of orange. It is a complex color because it can be created in several different ways depending on the system being used. In the RYB color model, which is often used in painting, brown is made by mixing the three primary colors: red, yellow, and blue. In the CMYK color model used for printing, brown is usually made by combining yellow ink with small amounts of magenta and black inks. Digital screens use the RGB color model to project light. In this system, brown results from combining red light at low intensity with green light at an even lower intensity, often with some blue light present.

In the world of science, brown is defined by how we perceive light. It refers to long wavelength hues, such as yellow, orange, or red, when they are combined with low luminance or low saturation. Interestingly, brown is a color of perception that only exists when there is a brighter color to contrast against it. If the light levels are very low, objects that are actually yellow or orange might be perceived as brown. Because brown covers such a wide range of the visible spectrum, we often use composite adjectives to describe specific shades. These include terms like red-brown, yellowish-brown, dark brown, or light brown.

We see the color brown everywhere in the natural world. It is common in minerals, soil, and wood. Because of this, many animals have evolved brown pelts, scales, or feathers to use as camouflage within their habitats. Humans also share this color in our biology through brown hair, skin pigmentation, and eye color. In the human eye, brown irises are caused by a relatively high concentration of melanin in the stroma. This melanin absorbs both short and long wavelengths of light. While light or medium-pigmented brown eyes are found in parts of Europe and Asia, the majority of people in the world have dark brown eyes.

Humans have used brown pigments in art since prehistoric times. As far back as 40,000 BC, people used umber, a natural clay pigment, for paintings. Umber is composed of iron oxide and manganese oxide. About 17,300 years ago, artists painted brown horses on the walls of the Lascaux cave. In Ancient Egypt, painters used umber to depict brown skin in tomb paintings. The Greeks and Romans also created a reddish-brown ink called sepia. This ink was made from the ink of a cuttlefish and was used by famous Renaissance artists like Leonardo da Vinci and Raphael.

Throughout history, the color brown has often been linked to social status. In Ancient Rome, the urban poor were called "pullati," which literally means "those dressed in brown." During the Middle Ages, brown robes were worn by Franciscan monks to show humility and poverty. In 1363, an English statute required poor people to wear russet, a coarse wool cloth dyed to a subdued grey or brown shade. In the Renaissance, artists began using more browns as oil painting became popular. They used different earth pigments like raw umber from Umbria, Italy, and raw sienna from Tuscany. They also used burnt versions of these clays, which were heated to create darker or more reddish shades.

Famous painters in the 17th and 18th centuries used brown to master light and shadow. Caravaggio and Rembrandt used browns to create chiaroscuro, an effect where subjects appear to emerge from darkness. Rembrandt also added umber to his paint layers because it helped the paint dry faster. He used a pigment called Cassel earth, which was over ninety percent organic matter like soil and peat. This was also known as Van Dyck brown after the painter Anthony van Dyck. In the 19th century, most French Impressionists actually disliked brown, preferring bright, pure colors. However, Paul Gauguin was an exception, using luminous brown tones in his portraits of French Polynesia.

Many words for brown around the world are connected to food and drink. In Turkey and Greece, the word for brown comes from the color of coffee. In Japan, the word refers to the color of tea. In Southeast Asia, names for brown often come from the word for chocolate. In languages like Portuguese, Spanish, and French, the word is derived from the Latin word for chestnut. This connection to nature continues in modern culture. In the late 20th century, brown became a symbol for things that are natural and healthy. This is why we see it used for items like brown paper bags, brown bread, and brown sugar.

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