South Korea Flag: Meaning, History, Colors & Pictures

South Korea’s flag, the Taegeukgi, has a white rectangular field, a red and blue taegeuk circle in the center, and four black trigrams around it. The trigrams represent sky, earth, water, and fire. Its height:length proportion is 2:3, and the exact arrangement follows official Korean construction instructions.

The national flag is called Taegeukgi. Taegeuk refers to the central symbol of complementary forces, while gi means flag. South Korea is the common country name used here; Republic of Korea is the state’s official English name. The flag’s historical origins precede the establishment of that republic in 1948.

The flag uses white, red, blue, and black. White forms the background, red and blue divide the central taegeuk, and black forms the four trigrams. Official guidance specifies CIE and Munsell color references. The supplied artwork uses a documented screen palette, whose hexadecimal values are reproduction choices rather than legislated RGB values.

Official explanations connect the white field with brightness, purity, and peace. The red and blue taegeuk expresses the harmony of complementary forces: red is yang and blue is yin. The four trigrams signify sky, earth, water, and fire. Together, these elements present an ordered, interconnected universe rather than a collection of unrelated decorations.

The central symbol is a taegeuk: one circle divided into interlocking red and blue regions by a curved boundary. Red occupies the upper region and blue the lower region in the standard horizontal view. The official construction uses circular arcs aligned with the flag’s descending diagonal, not a generic upright yin-yang icon.

In the official explanation, blue represents yin and red represents yang. They are complementary forces whose interaction produces harmony and development. The flag does not identify one as good and the other as evil. Both belong within the same circular form, emphasizing their relationship rather than the victory of one over the other.

The four trigrams are geon at the upper left, gam at the upper right, ri at the lower left, and gon at the lower right in the standard horizontal view. Their meanings are sky, water, fire, and earth respectively. Each contains three lines, which may be continuous or broken at the center.

Geon represents sky, also commonly translated as heaven. It is the upper-left trigram in the normal horizontal view and consists of three continuous black lines. Its three solid bars contrast with gon’s three broken lines at the opposite corner. Geon helps identify the correct orientation when the flag is raised normally.

Gon represents earth. It appears at the lower right in the standard horizontal view and contains three broken black lines, making six separate black pieces. The middle gaps are deliberate parts of the design. Gon is diagonally opposite geon, the three-solid-line trigram associated with sky.

Gam represents water. It occupies the upper-right corner in the usual horizontal view, with one continuous middle line between two broken outer lines. That creates five separate black pieces. Its arrangement differs from ri, the fire trigram at the lower left, whose middle line is broken instead.

Ri represents fire. In the standard horizontal flag it is at the lower left, with two continuous outer lines surrounding a broken middle line. It has four separate black pieces. Its pattern is the complement of gam’s, and its position becomes especially useful when identifying the prescribed vertical hanging orientation.

The standard flag’s height:length ratio is 2:3, meaning its length is one and a half times its height. The main SVG and PNG use a 6,000 by 4,000 canvas. The taegeuk diameter is half the flag height, and all trigram measurements scale with that diameter rather than being independently estimated.

Start with a 3:2 rectangle and a centered circle whose diameter is half the height. Construct the taegeuk along the upper-left to lower-right diagonal using two smaller semicircles. Center the four trigrams on the rectangle’s diagonals, with their bars perpendicular to those diagonals and their nearest edges one quarter-circle-diameter from the circle.

Using D for the taegeuk diameter, each full bar is D/2 long and D/12 thick. The spacing between rows and the gap in a broken line are both D/24. A three-row group is D/3 deep. Each half of a broken line is therefore 11D/48 long.

The Taegeukgi emerged during Korea’s nineteenth-century diplomatic opening. Government accounts connect its development with the 1882 Korea–United States treaty and Park Yeong-hyo’s diplomatic mission later that year. King Gojong proclaimed it a national flag on March 6, 1883. Later governments and regulations refined its appearance rather than creating an entirely unrelated symbol.

The date depends on the event being described. King Gojong proclaimed the Taegeukgi a national flag on March 6, 1883. The Republic of Korea’s government was established on August 15, 1948, using this inherited national symbol. Construction guidelines announced on October 15, 1949 standardized its design; they were not its nineteenth-century origin.

The flag’s origins involve several people and successive decisions. Scholarship credits Lee Eung-jun with an early 1882 design, while official history emphasizes Park Yeong-hyo’s diplomatic use and King Gojong’s proclamation. Assigning the entire modern standardized flag to one unqualified sole designer would obscure the difference between early creation, adoption, and later specification.

Standardization developed in stages. The Provisional Government issued a style guide in 1942; a flag committee was formed in January 1949; and construction guidelines were announced on October 15, 1949. The National Flag Act and its enforcement decree followed in 2007. These later rules organize an existing symbol rather than establish its first historical appearance.

National Liberation Day, Gwangbokjeol, is observed on August 15 and commemorates liberation from Japanese colonial rule in 1945. The Republic of Korea’s government was established on the same calendar date in 1948. The Taegeukgi connects with both national remembrance and public celebration, but those two historical events should remain clearly distinguished.

No single flag date establishes universal diplomatic recognition. The Republic of Korea and the Democratic People’s Republic of Korea were admitted to the United Nations on September 17, 1991, through General Assembly resolution 46/1. That membership event is distinct from the Taegeukgi’s nineteenth-century origins and the Republic of Korea’s establishment in 1948.

Earlier Taegeukgi examples varied in the taegeuk’s form, trigram arrangement, and proportions before later standardization. The National Museum of Korea preserves the Denny Taegeukgi, an important surviving nineteenth-century example. Historical objects should be identified by their own dates and collection records, rather than redrawn as if they followed every modern construction rule.

The flag does not contain the Republic of Korea’s separate national emblem. Its complete design consists of the white field, red and blue taegeuk, and four black trigrams. The national emblem combines a taegeuk with five mugunghwa petals and a ribbon bearing the country’s name; those additional elements do not belong on the flag.

Viewed through a single-layer flag from the opposite side, the whole design appears horizontally mirrored. The taegeuk curve and all four trigrams move together, and the observer sees the attachment edge on the opposite side. This viewing model is different from turning the flag upside down or rearranging individual symbols.

For the elongated hanging described in the enforcement decree, ri is at the upper left. Government protocol guidance explains a clockwise quarter-turn of the flag, with any necessary extension confined to the lower white area. This specialized presentation should be identified separately from the ordinary horizontal 2:3 national flag.

For ordinary hoisting, geon belongs at the upper left, and the side containing geon and ri attaches to the pole. Official guidance calls for suitable illumination when the flag is flown at night. When displayed with foreign national flags, the enforcement decree specifies equal size and height; domestic organizational flags have separate placement rules.

For prescribed mourning display, the flag is first raised to the top and then lowered by one flag height. Before final lowering, it is raised to the top again. Ministry guidance identifies Memorial Day and national funeral mourning among the relevant occasions. This explanation does not announce that a special mourning order is currently active.

Keep the flag clean, intact, and correctly displayed. Ministry guidance allows washing or ironing when the flag will not be damaged, so a blanket claim that it must never be washed is inaccurate. Products using the design must respect the flag’s dignity. These principles do not automatically grant commercial clearance or official endorsement.

Use the SVG for scalable artwork or the opaque 6,000 by 4,000 PNG for raster workflows, preserving the 2:3 proportion. Check the circle, trigram patterns, gaps, and orientation after printing. Screen colors provide a consistent digital reference; physical production should use the applicable color specifications and an approved proof rather than an assumed universal conversion.

Common errors include swapping gam and ri, replacing the taegeuk with a dotted yin-yang icon, using arbitrary forty-five-degree trigram angles, and stretching the rectangle. Also avoid closing broken-line gaps, making the white field transparent, or labeling chosen hex colors as statutory values. A correct drawing preserves the complete geometry and clearly identifies its reproduction choices.

The downloads include a clean SVG and an opaque 6,000 by 4,000 PNG, plus 24 illustrated subjects in both formats. The master follows official geometric ratios and a declared screen palette. Separate diagrams explain the taegeuk, trigrams, history, construction, and display, while the social card surrounds a complete flag with an external title.