Tan

Tan is a color that appears as a pale to medium brown, resembling the shade produced by treated leather. The term derives from tanning, the chemical process that converts animal hides into leather. In design, tan sits between beige and brown and is often described as warm, neutral, and versatile. In digital color systems, tan is commonly approximated by hex values around #D2B48C and corresponding RGB values of approximately (210, 180, 140).

Tan can also refer to skin tanning, the darkening of the skin in response to ultraviolet exposure from sun or tanning devices. The effect is caused by increased melanin production in the epidermis. Tanning is temporary but can lead to longer-lasting changes with repeated exposure. Prolonged sun exposure raises risks of sunburn, photoaging, and skin cancer, so sun protection and moderation are advised.

Tan is the abbreviation for the tangent function in trigonometry. The tangent of an angle is defined as the ratio of the sine to the cosine (tan x = sin x / cos x). The function has a period of π (180 degrees) and has vertical asymptotes at x = π/2 + kπ, where it is unbounded. Its range is all real numbers. Inverse tan, arctan, returns angles in a principal value range. The tangent function is fundamental in geometry, calculus, and physics.

Surname and given name: Tan is a common personal name and surname in several cultures, notably among Chinese and Southeast Asian communities, where it appears in romanized forms of various surnames. It also occurs as a given name in some regions and has diverse etymologies depending on language and culture.