A good flag comparison begins with one question: what feature is actually different? For some pairs it is the first stripe; for others it is a small emblem or the number of stars. Colour shade alone is a poor clue on a tiny screen.
Use the explanations first, then answer the four picture questions in each section. Some national flags have civil and state versions, so a coat of arms may appear only on a particular version. Where a low-resolution image cannot settle a pair, the guide says so.
Quick takeaways
- Read stripes from the hoist or top edge.
- Look for emblems and count stars.
- Treat shade-only distinctions cautiously on small screens.
When the stripe order is reversed
Ireland and Côte d'Ivoire both use three vertical bands. Start at the hoist: Ireland is green-white-orange; Côte d'Ivoire is orange-white-green. Turning the page around is not a reliable way to remember them—say the colour order aloud.
Indonesia and Poland are horizontal bicolours with reversed order. Indonesia is red over white; Poland is white over red. The image, not a guessed continent, should make the decision.
1This flag has vertical green, white and orange bands. Which country is it?
Answer: Ireland. Ireland starts green at the hoist.2This flag has vertical orange, white and green bands. Which country is it?
Answer: Côte d'Ivoire. Côte d'Ivoire starts orange at the hoist.3This flag has red above white. Which country is it?
Answer: Indonesia. Indonesia puts red on top.4This flag has white above red. Which country is it?
Answer: Poland. Poland puts white on top.
When an emblem makes the difference
Italy and Mexico share vertical green, white and red. Mexico adds its coat of arms in the centre; Italy's civil flag is plain. Romania and Moldova share vertical blue, yellow and red, but Moldova has a coat of arms in the yellow band.
At small sizes, the emblem can disappear. Zoom in or use a larger image before deciding; a thumbnail can hide the only reliable clue.
5This flag has a plain green-white-red vertical tricolour. Which country is it?
Answer: Italy. Italy's civil flag has no central emblem.6This flag has a green-white-red vertical tricolour with an eagle. Which country is it?
Answer: Mexico. Mexico's coat of arms sits in the white centre band.7This flag has plain vertical blue, yellow and red bands. Which country is it?
Answer: Romania. Romania has no coat of arms on its civil flag.8This flag has vertical blue, yellow and red bands with a coat of arms. Which country is it?
Answer: Moldova. Moldova's eagle emblem appears in the yellow centre band.
When proportions or shades are the clue
The Netherlands and Luxembourg both show red-white-blue stripes, but Luxembourg normally uses a lighter blue and different proportions. Romania and Chad are also very close blue-yellow-red vertical tricolours; the shade of blue is often cited, yet screens and printed copies can make that unreliable.
These are honest difficult cases. If the flag is a tiny icon without context, say that the image may not provide enough information instead of claiming a certain answer from a barely visible shade.
9This flag has red, white and deep-blue horizontal bands. Which country is it?
Answer: Netherlands. The Netherlands uses a darker blue than Luxembourg in standard depictions.10This flag has red, white and light-blue horizontal bands. Which country is it?
Answer: Luxembourg. Luxembourg's lower stripe is commonly shown light blue.11This flag has vertical blue, yellow and red bands with no emblem. Which country is it?
Answer: Romania. Romania and Chad are very similar; context or an accurate colour reference may be needed.12This flag has vertical blue, yellow and red bands with a dark blue hoist. Which country is it?
Answer: Chad. Chad's blue is specified darker than Romania's, but small images can obscure the distinction.
When stars or crosses are easy to overlook
Australia and New Zealand are both blue ensigns. Australia has the large Commonwealth Star beneath the Union Flag and five Southern Cross stars; New Zealand shows four red stars edged in white. Norway and Iceland both use Nordic crosses, but their field and cross colours swap.
Count or locate the stars before comparing shades. For the Nordic flags, identify the field first, then the colour of the inner cross.
13This flag has a blue ensign with a large white star below the Union Flag. Which country is it?
Answer: Australia. Australia's Commonwealth Star sits below the canton.14This flag has a blue ensign with four red stars edged in white. Which country is it?
Answer: New Zealand. New Zealand's Southern Cross has four red stars.15This flag has a red field with a blue Nordic cross outlined in white. Which country is it?
Answer: Norway. Norway's field is red and its inner cross is blue.16This flag has a blue field with a red Nordic cross outlined in white. Which country is it?
Answer: Iceland. Iceland reverses those two colours: blue field, red inner cross.
When the stripe width or central band changes
Colombia, Ecuador and Venezuela all use yellow, blue and red horizontal bands. Colombia's yellow band takes half the flag. Ecuador's national flag carries a coat of arms. Venezuela uses an arc of stars across the blue band.
Thailand and Costa Rica both have five horizontal bands, but Thailand puts blue in the broad centre band; Costa Rica puts red there.
17This flag has a broad yellow band above blue and red with no central emblem. Which country is it?
Answer: Colombia. Colombia's yellow stripe occupies half the flag.18This flag has yellow, blue and red bands with a central coat of arms. Which country is it?
Answer: Ecuador. Ecuador's national flag includes the coat of arms.19This flag has red-white-blue-white-red bands with a broad blue centre. Which country is it?
Answer: Thailand. Thailand's broad central band is blue.20This flag has blue-white-red-white-blue bands with a broad red centre. Which country is it?
Answer: Costa Rica. Costa Rica's broad central band is red.
Five final flag comparisons
Check whether the visual clues now stick.
0 / 5 answered
1This flag has green, yellow and red vertical bands. Which country is it?
Answer: Mali. Mali starts green at the hoist.2This flag has red, yellow and green vertical bands. Which country is it?
Answer: Guinea. Guinea starts red at the hoist.3This flag has a red disc on green. Which country is it?
Answer: Bangladesh. Bangladesh's field is green.4This flag has a red disc on white. Which country is it?
Answer: Japan. Japan's field is white.5This flag has a green star on the yellow band of a vertical tricolour. Which country is it?
Answer: Senegal. Senegal adds a green star where Mali has no emblem.
Frequently asked questions
Are the flags of Romania and Chad identical?
Their blue-yellow-red vertical layouts are extremely close. Official blue specifications differ, but many digital images cannot show the distinction reliably.
Why does Mexico's flag look like Italy's?
Both use vertical green, white and red bands. Mexico's coat of arms in the white band is the decisive visible difference.
Use one reliable cue per pair
For each pair you miss, write a contrast in one line: 'Ireland starts green; Côte d'Ivoire starts orange.' Then test the pair from an image without reading the cue.
Compare from a clear image
Open two flags at the same size and name a structural difference before relying on colour shade. A tiny thumbnail can make Romania and Chad or the Netherlands and Luxembourg nearly indistinguishable.
FlagCDN provides current images for comparison. If a distinction depends on an official colour specification or version of a flag, verify it against the relevant national authority.
