navy blue suits are generally used for semi-formal business occasions, while black suits are used for more serious and formal occasions.

Generally, the dark blue color of a suit is equivalent to the dark color, and if it is black, it is a bit overbearing, giving people a sense of oppression, which is often used in very serious occasions and will create a feeling of being superior. Many dark suits are navy blue, and the tone of the tie should be blue, and the blue tie is more formal.

Extended information:

The historical development of suits:

The Germanic national costume originated from the south of northern Europe

It is said that it was worn by fishermen in western Europe at that time. They were accompanied by the sea all year round, so it was convenient to make a living in the sea, dress loosely, buckle less and catch fish. Based on the principle of structural separation and combination of human activity and body shape, it forms a garment sewing method with pleating (saving), slicing and splitting, and establishes a popular garment structure model in the future.

Some sources also believe that suits originated from the traditional clothes of the British royal family. It is a three-piece suit with men wearing the same fabric, which consists of a coat, a vest and trousers. In modeling, it continues the basic form of men's dress, which belongs to the orthodox costume in daily clothes and is widely used, and has influenced the international community from Europe, becoming the world's guiding clothing, that is, international clothing.

Modern suits were formed in the mid-19th century, but in terms of their composition characteristics and wearing habits, they can be traced back to Louis XIV in the second half of 17th century.

In the Louis XIV era in the second half of the 17th century, the knee-length coat "Jistekol", the slightly shorter "Best" and the tight-fitting trousers "Kyurot" came onto the historical stage together, forming the composition form and many wearing habits of modern three-piece suits.

generally speaking, the front placket of Steckel is not buttoned, but only a few buttons above and below the waistline. This is the origin of the wearing habit that modern single-breasted suits are generally not buttoned, but only one button above two buttons.

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