Brown

Brown is not a spectral color but a dark shade of orange or yellow, perceived when the luminance is low relative to surrounding colors. In the CIE 1931 color space, brown corresponds to hues around 30°–60° with low lightness. The perception of brown depends on contrast: a patch of orange appears brown when surrounded by lighter colors, a phenomenon known as simultaneous contrast.¹

In printing and digital media, brown is typically produced by mixing complementary colors or by using CMYK values such as C=0, M=50, Y=100, K=50. The Munsell color system defines brown as a dark, desaturated hue, and it is often described as a tertiary color.

The English word 'brown' derives from the Old English 'brún', which originally meant 'dark' or 'swarthy', and is related to the Old High German 'brūn' and Old Norse 'brúnn'. The first recorded use of 'brown' as a color name in English dates to around 1000 AD.²

In art, brown pigments have been used since prehistoric times, with ochre and umber being among the earliest. During the Renaissance, browns were used for underpainting and shading, and artists like Rembrandt employed them to create chiaroscuro effects. The 18th century saw the introduction of synthetic brown pigments such as Van Dyke brown and sepia.

Brown is often associated with earth, stability, and reliability. In Western cultures, it can connote warmth and comfort, but also drabness or poverty. In fashion, brown is a classic neutral, while in politics, 'brown' has been used to refer to fascist movements, from the Nazi SA's brown shirts to contemporary far-right groups.³

In many African and Asian cultures, brown is linked to the earth and ancestors, and it appears in traditional textiles and rituals. In color psychology, brown is thought to promote a sense of security and approachability, though these claims lack rigorous scientific backing.

Brown has several niche applications and surprising facts. For instance, the brown color of human eyes is due to melanin, and it is the most common eye color worldwide. In biology, brown fat is a type of adipose tissue that generates heat, and its discovery has implications for metabolism research.⁴

In heraldry, brown is not a standard tincture but appears as 'brunâtre' in some continental traditions. The Crayola crayon 'Brown' was introduced in 1903, and the company has added variations like 'Burnt Sienna' and 'Tan'. Additionally, the brown note is a humorous myth about a low-frequency sound that causes involuntary defecation, popularized by the movie 'Dumb and Dumber'.

Simultaneous contrast

The phenomenon where a color's perception is affected by surrounding colors.

CMYK

A color model used in printing, based on cyan, magenta, yellow, and key (black).

Munsell color system

A color space that specifies colors based on hue, value, and chroma.

Ochre

A natural earth pigment containing iron oxide, ranging from yellow to deep brown.

Brown fat

A type of adipose tissue that produces heat by burning calories.