Many countries have just red, white and blue on them:
USA, Panama, Britain, Australia, France, Luxembourg, Netherlands and North Korea are amongst them. There are many others.
Several countries have a blue, yellow, red, and white flag:KiribatiCape VerdeMalaysiaPhilippinesSerbiaSloveniaTuvaluIn addition, the Buddhist flag is blue, yellow, red, and white.
Bangladesh
Croatian.
red white and blue
From top to bottom, the Russian flag has horizontal stripes of white, blue and red.
france France
Blue, white, and red. Blue, white, and red.
Brazil is one, there are dozens of others.
Chile
Chile
No county in Ireland wears red, blue and white. Some use red and white, some blue and white, one is all white, but none wear red and blue or red, blue and white.
The Icelandic flag has 3 colors: blue (for mountains), white (for ice), and red (for fire, secondary to the active volcanoes in the country).