Weird
green dots.
Green is a color, the
perception of which is evoked by light having a spectrum
dominated by energy with a wavelength of roughly 520–570
nanometres. In the subtractive color system, it is not
a primary color, but is created out of a mixture of yellow
and blue, or yellow and cyan; it is considered one of
the additive primary colors. On the HSV color wheel, the
complement of green is magenta; that is, a purple color
corresponding to an equal mixture of red and blue light.
On a color wheel based on traditional color theory (RYB),
the complementary color to green is considered to be red.
The word green is closely related to the Old English verb
growan, “to grow”. It is used to describe plants
or the ocean. Sometimes it can also describe someone who
is inexperienced, jealous, or sick. In America, green
is a slang term for money, among other things. Several
colloquialisms have derived from these meanings, such
as “green around the gills”, a phrase used to
describe a person who looks ill.
Several minerals have a green color, including emerald,
which is colored green by its chromium content. Animals
such as frogs, lizards, and other reptiles and amphibians,
fish, insects, and birds, appear green because of a mixture
of layers of blue and green coloring on their skin. By
far the largest contributor to green in nature is chlorophyll,
the chemical by which plants photosynthesize. Many creatures
have adapted to their green environments by taking on
a green hue themselves as camouflage.
Culturally, green has broad and sometimes contradictory
meanings. In some cultures, green symbolizes hope and
growth, while in others, it is associated with death,
sickness, envy, or the devil. The most common associations,
however, are found in its ties to nature. For example,
Islam venerates the color, as it expects paradise to be
full of lush greenery. Green is also associated with regeneration,
fertility and rebirth for its connections to nature. Recent
political groups have taken on the color as symbol of
environmental protection and social justice, and consider
themselves part of the Green movement, some naming themselves
Green parties. This has led to similar campaigns in advertising,
as companies have sold green, or environmentally friendly,
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