It is called the "union" or the "canton" in general flag terminology. In the United States of America it is described in our first Flag Resolution of June 14, 1777 - It stated: "Resolved: that the flag of the United States be made of thirteen stripes, alternate red and white; that the union be thirteen stars, white in a blue field, representing a new Constellation."
The Blue field
There are no blue stripes on the American Flag. There are red and white stripes for each of the original 13 colonies. The blue part in the left corner with 50 stars is for the 50 states. The blue is because America's colors are red, white, and blue.
The blue part of the American flag is known as the "union," which consists of a blue field with 50 white stars representing each state. The blue section occupies a fraction of the flag, specifically about 2/5 of the width and 1/3 of the height. This design symbolizes the unity and perseverance of the states under one nation. The colors of the flag also carry meanings, with blue representing vigilance, perseverance, and justice.
It's the colors of the American flag, and also the colors of the Confederate flag, which used to be displayed as part of the North Carolina flag.
The answer depends on which countries flag the question is about. In the case of France, for example, the answer is 0%. For Haiti it is 50%. For the EU it is much more.
The Nordic cross on the Finnish flag is blue and the remainder of the flag is white.
The current design of the American flag, as adopted on July 4, 1960, contains 50 stars, arranged as five rows of six stars and four rows of five stars.
Like every flag in the world (almost, there are very specific colors for each part. In the case of the American flag the exact white, red, and blue colors to be used in the flag are specified with reference to the CAUS Standard Color Reference of America, 10th edition.These (with the blue included for completeness sake) are:White: Cable No. 70001Old Glory Red: Cable No. 70180Old Glory Blue: Cable No. 70075
Hawaii
field
Liechtenstein's flag is blue in the top half and red in the bottom half. There is also a yellow/gold crown in the blue part.
she sewed the American Flag