Ecuador’s presidential standard uses a 1:1 proportion.
That ratio means the presidential standard is square rather than rectangular. It uses the same essential tricolor design as Ecuador’s national flag: a yellow stripe twice the combined visual height of the blue and red stripes, with the national coat of arms centered on the field. The square format distinguishes the presidential standard from the ordinary national flag, whose proportion is 2:3.
Ecuador’s yellow, blue, and red colors belong to the wider Gran Colombian flag tradition shared with Colombia and Venezuela. Similar colors can make the three flags easy to confuse, but Ecuador’s double-width yellow band and central coat of arms are important identifiers. The presidential standard is the state version used to represent the head of government, rather than the plain civil flag.
Modern Ecuadorian regulations describe the national flag as 2:3 and the national standard as square, measuring 0.9 by 0.9 metres in the cited specifications. The coat of arms, rather than a change in colors, is what gives the presidential standard its official governmental character.