Why are the colors on the U.S.A. flag Red, White, and Blue?

They are the most powerful colours in the human psyche? ashamedly I really do not know the answer..but then I’m not from the US

Maybe because it used to be (mostly) a British colony, and the British flag is red, white and blue?

Here ya go.

“The colors of the pales (the vertical stripes) are those used in the flag of the United States of America; White signifies purity and innocence, Red, hardiness & valour, and Blue, the color of the Chief (the broad band above the stripes) signifies vigilance, perseverance & justice.”

blood purity and something else, right? blue…honor? hm.

Pretty much just used The Union Jack in the corner with 13 stripes to represent the 13 colonies known as The Grand Union Flag, the Union Jack was then replaced by stars as states were added. As the union Jack is Red, White, and Blue it just logically followed.

The East India company had long been using a flag with red and white horizontal stripes. The number varied but was often 13. The canton (the field on the mast side) of this flag was typically St. George’s cross. Here’s one version. This was known as the “Grand Union Flag” in the American Colonies.

The American flag was based on this design, with the addition of the star canton to symbolize a “new constellation” in the sky. The dark blue was chosen as a natural backdrop for the stars.

On June 14, 1777, in order to establish an official flag for the new nation, the Continental Congress passed the first Flag Act: “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.”

Between 1777 and 1960, Congress passed several acts that changed the shape, design and arrangement of the flag and allowed for additional stars and stripes to be added to reflect the admission of each new state.

Act of January 13, 1794 – provided for 15 stripes and 15 stars after May 1795.

Act of April 4, 1818 – provided for 13 stripes and one star for each state, to be added to the flag on the 4th of July following the admission of each new state, signed by President Monroe.

Executive Order of President Taft dated June 24, 1912 – established proportions of the flag and provided for arrangement of the stars in six horizontal rows of eight each, a single point of each star to be upward.

Executive Order of President Eisenhower dated January 3, 1959 – provided for the arrangement of the stars in seven rows of seven stars each, staggered horizontally and vertically.

Executive Order of President Eisenhower dated August 21, 1959 – provided for the arrangement of the stars in nine rows of stars staggered horizontally and eleven rows of stars staggered vertically.

Red symbolizes Hardiness and Valor, White symbolizes Purity and Innocence and Blue represents Vigilance, Perseverance and Justice.

http://www.usa-flag-site.org/history.shtml