El negro es la percepción visual de máxima oscuridad, debido a la inexistencia de fotorrecepción, por falta total de luz. Se asemeja a la coloración del carbón. El negro que se encuentra estandarizado en catálogos de colores e inventarios cromáticos responde a la definición dada más arriba, es decir, es de claridad nula y acromático. La denominación de color «negro» incluye a las coloraciones similares al negro estándar, denominadas negruzcas, que poseen una ligera sugerencia de saturación y matiz.

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Black is the darkest color, the result of the absence or complete absorption of light. Like white and grey, it is an achromatic color, literally a color without hue. It is one of the four primary colors in the CMYK color model, along with cyan, yellow, and magenta, used in color printing to produce all the other colors. Black is often used to represent darkness; it is the symbolic opposite of white (or brightness). Black was one of the first colors used by artists in neolithic cave paintings. In the 14th century, it began to be worn by royalty, the clergy, judges and government officials in much of Europe. It became the color worn by English romantic poets, businessmen and statesmen in the 19th century, and a high fashion color in the 20th century. In the Roman Empire, it became the color of mourning, and over the centuries it was frequently associated with death, evil, witches and magic. According to surveys in Europe and North America, it is the color most commonly associated with mourning, the end, secrets, magic, force, violence, evil, and elegance.

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