There are only four countries with flags containing only blue and yellow : r/vexillology
Mountains & Flags
14 Blue And Yellow Flags In The World (Country And States) - Utah Pulse
Flag of the Democratic Republic of the Congo | Britannica
Flags With Blue and Yellow - WorldAtlas
6 Countries With Blue and Yellow Flags, All Listed - AZ Animals
Flag of Barbados | Britannica
Flag of Saint Lucia stock vector. Illustration of lucia - 118958451
10 Blue And Yellow Flags In The World - Red Rock Scenic By Way
Saint Lucia
6 Countries With Blue and Yellow Flags, All Listed - AZ Animals
Argentina Flag
Flag of the Bahamas | Britannica
Flag of the Democratic Republic of the Congo | Britannica
File:Flag yellow blue 5x3.svg - Wikimedia Commons
272,598 Yellow Blue Flag Images, Stock Photos & Vectors | Shutterstock
File:Flag of Havelange.svg - Wikimedia Commons
What flag has the colors blue yellow blue? - Quora
Flags
6 Countries With Blue and Yellow Flags, All Listed - AZ Animals
Blue and Yellow Flags Against Sky Stock Photo - Image of angle, blue: 114696314
light blue flag with yellow stars - Clip Art Library
Blue and Yellow Flag: Country Flags With These Color Combinations - Eggradients.com
Flag of Kazakhstan | Britannica
Flags With Blue and Yellow - WorldAtlas
What country has a light blue flag and a yellow star? - Quora
What country has a green yellow blue flag? - Quora
