Vietnamese five-color flags

In Vietnamese culture, five-color flags (Vietnamese: cờ ngũ sắc) or five elements flags (cờ ngũ hành) are traditionally flown during festivals and religious ceremonies. A five-color flag consists of five concentric squares in red, green, yellow, and blue, representing the five elements (ngũ hành). The order of colors varies. The outermost square has three ragged edges, similar to fringing. The center of the flag is sometimes defaced to commemorate a specific concept or personality.

Five-color flag

Use	Other
Proportion	1:1

A five-color flag at a festival in 2010 commemorates the millennial of the founding of Thăng Long (Hanoi).

Historically, some imperial and military ensigns followed a similar pattern.