Taegeuk

Taegeuk is a Sino-Korean term meaning "supreme ultimate", although it can also be translated as "great polarity / duality". The term and its overall concept is derived from the Chinese Taiji, popularised in the west as the Yin and Yang. The symbol was chosen for the design of the Korean national flag in the 1880s. It substitutes the black and white color scheme often seen in most taijitu illustrations with blue and red, respectively, along with a horizontal separator, as opposed to vertical.

South Koreans commonly refer to their national flag as taegeuk-gi (태극기), where gi (기) means "flag" or "banner". This particular color-themed symbol is typically associated with Korean traditions and represents balance in the universe; the red half represents positive cosmic forces, and the blue half represents the complementary or opposing, negative cosmic forces. It is also used in Korean shamanism, Confucianism, Taoism, and Buddhism.

History
The diagram has been existent for the majority of written Korean history. The origins of the interlocking-sinusoid design in Korea can be traced to as early as the Goguryeo or Silla period, e.g. in the decoration of a sword, dated to the 5th or 6th century, recovered from the grave of Michu of Silla, or an artifact with the pattern of similar age found in the Bogam-ri tombs of Baekje at Naju, South Jeolla Province in 2008. In the compound of Gameunsa, a temple built in AD 628 during the reign of King Jinpyeong of Silla, a stone object, perhaps the foundation of a pagoda, is carved with the design.

In Gojoseon, the ancient kingdom of Joseon, the design was used to express the hope for harmony of yin and yang. It is likely due to the earliest spread of ancient Chinese culture in Gojoseon, especially during the early Zhou dynasty.

Today the is usually associated with Korean tradition and represents balance in the universe, as mentioned in the previous section (red is, or positive cosmic forces, and blue is , or negative cosmic forces). Among its many religious connotations (Korean Confucianism; Taoism in Korea; Korean Buddhism), the taegeuk is also present in Korean shamanism.

South Korea's national flag
The symbol is most prominently displayed in the center of South Korea's national flag, called the, literally taegeuk flag (along with four of the eight trigrams used in divination). Because of the Taegeuk's association with the national flag, it is often used as a patriotic symbol, as are the colors red, blue, and black.

Though the taegeuk and the trigrams have been used since the earliest periods of Korean history, its use had started earlier in China.

The is a Taoist icon which symbolizes cosmic balance, and represents the constant interaction between the yin and yang, also known as eum/yang. The symbol used on the flag originated from the Chinese Confucian classic known as The Book of Changes (also known as I Ching or Yijing), a book developed for use in divination.

The four trigrams also originated from the I Ching; each of these trigrams represent specific Confucian virtues, cosmic elements, or family roles, in addition to seasons, compass directions, etc. The trigram (☰) represents the heaven (sky), summer, south, father, and justice. The trigram (☷) symbolizes the earth (ground), winter, north, mother, and vitality, the  trigram (☵) the moon, autumn, west, 2nd (or middle) son, and wisdom, and the  trigram (☲) the sun, spring, east, 2nd (or middle) daughter, and fruition. The four trigrams supposedly move in an endless cycle from "geon" to "ri" to "gon" to "gam" and back to "geon" in their pursuit of perfection.

The white background symbolizes the homogeneity, integrity and purity of the Korean people. For thousands of years, Korean people nearly exclusively wore white clothing. This eventually led to the rise of the nickname "white-clothed people" for Koreans. Therefore, the colour white is often considered associated with the Korean people.

Tricolored taegeuk
A variant in South Korea is the tricolored (sam·saeg·ui tae·geuk 삼색의 태극 or sam·tae·geuk 삼태극), which adds a yellow lobe or pa. The yellow portion is taken as representing humanity, in addition to the red and blue representing earth and heaven, respectively.

A rendition of the tricolored also appeared in the official logo of the 1988 Summer Olympics accompanied by the five Olympic rings.

Paralympics symbol


The first designated Paralympic logo, created for the 1988 Summer Paralympics in Seoul, was based on the traditional pa, the spiral or sinusoid components making up the symbol. In March 1992, the Paralympic symbol was changed to a version utilizing only three pa. This was not fully adopted until after the 1994 Winter Paralympics in Lillehammer, Norway, since the Lillehammer Paralympic Organizing Committee had by then already started a marketing program based on the five-pa version. The three-pa version remained in place from the close of the Lillehammer Games through the 2004 Summer Paralympics in Athens, Greece. The current Paralympic symbol has morphed the teardrop-shaped pa into more of a swoosh, but still employs three such colour swatches, one each of red, blue, and green.

Miss Asia Pacific World
The logo for the Miss Asia Pacific World Beauty Pageant, which began in Seoul, South Korea in 2011, is another example of the tricolored symbol.