The national flag of Greece is a blue and white flag with a cross pattern and parallel stripes. It is also the old flag of Greece. The nine blue and white parallel bars symbolize the nine syllables of the slogan "ε λ ε υ θ ε υ α θ υ" (give me liberty or give me death) during the Greek War of Independence (the other is that the nine bars symbolize the nine literary goddesses in Greek mythology). Blue Cross Symbol 182 1 The blue cross on a white background waved by the Bishop of Batraguirma North Yard during the Turkish independence uprising. The official standard national flag ratio is 3:2.

The origin of today's "cross stripe" national flag is a controversial issue. Every part, including the arrangement of blue and white, cross and stripe, will have very old historical factors; However, it is difficult to determine its "consistency", especially when 1822 officially adopted the national flag, the exact reason of the national flag was not recorded. The width of the nine bars is 1/9 of the width of the national flag, and the side length of the square area in the upper left corner is 4/9 of the width of the national flag.