The national flag is a rectangle with a ratio of 3:2. The flag is composed of blue, white and red. The upper left corner is a blue square with a white five-pointed star in the center. The right side is a white rectangle. The bottom half is a red rectangle. The white part is 2/3 of the red part. The red color symbolizes the heroic blood shed in langagua for Chile's independence and freedom, against the colonial Spanish rule. White symbolizes the snow of the andes peak. Blue symbolizes the ocean.

The Chilean flag is based on the star spangled banner of the United States in the early days of independence. Red represents the blood shed to break away from Spain. Blue represents the color of the sky and sea in Chile, and the square is said to be from the Indian emblem. White is Andean snow. A shining star in the sky indicates national unity.