Luxembourg's national flag is rectangular with an aspect ratio of 5:3 or 2: 1. The flag surface consists of three parallel and equal horizontal rectangles, which are red, white and light blue from top to bottom.

Red symbolizes the warm and brave national character, and also symbolizes the blood sacrificed by martyrs in the struggle for national independence and national liberation; White symbolizes the simplicity of the people and the pursuit of peace; Blue represents the blue sky, which means that the people have gained light and happiness. These three colors together symbolize equality, democracy and freedom.

National emblem of Luxembourg:

The national emblem of Luxembourg is divided into three types: large, medium and small. The central pattern is a coat of arms with ten white and blue stripes, with an angry red lion in the middle. There is a crown of the Grand Duke on it. There are two lion shields in the middle. The Great National Emblem is a national emblem with a cloak in the middle, with a crown above and a medal below. The national emblem is cloak-shaped.

There is a coat of arms in the gold, red and white cloak with a golden crown at the top. The shield consists of white and blue parallel stripes with an upright red lion wearing a crown. Red, white and blue are the colors of the national flag. There is a duke's golden crown above the coat of arms, a golden lion on each side, surrounded by ribbons, and an Aokang medal hanging at the lower end. The national emblem symbolizes that Luxembourg is a grand duchy.