Yellow represents the gold found in the Colombian land, blue represents the seas surrounding the country, and red represents the blood spilled on the battlefields for heroes who gained Colombia's freedom.
History
Adopted on November 26, 1861. The design was derived from the flag of Gran Colombia, created by Francisco de Miranda.
Construction
A 2:3 ratio. A horizontal tricolor of yellow, blue, and red. The yellow band is twice as wide as the other two (2:1:1 proportion).
Color Meanings
yellow: Wealth of the soil, the sun, and the source of light
blue: The oceans surrounding the country and the clear sky
red: The blood shed by heroes to gain independence