Look-alikes · Czechia · Comoros
Czechia vs Comoros
Two copies of one picture are 0% apart and the widest pair in the world is 100%.
Czechia and Comoros are 52% apart. A typical pair of flags is 68% apart.
Where the difference is
Each colour on Czechia, matched with the nearest colour on Comoros, and how far apart the two are, the number is the worst single tile, out of 255.
- #ffffff#ffffff0
- #d7141a#ef334038
- #11457e#003da539
The colour that separates them is a blue: #11457e against #003da5, 39 apart.
How they are put together
Both were measured as horizontal bands, a triangle at the pole.
What each one carries
Comoros carries a star and a crescent. Czechia carries nothing at all.
How the number was arrived at
Both flags are drawn at 64×48 and cut into squares 8 across. Each square is averaged to one colour, and the score is the worst single square, so two flags that agree everywhere except one corner are as far apart as that corner, which is the right answer to a question about whether anybody could tell them apart. 0 is the same picture; the number is the worst single tile, out of 255.
On that scale Czechia and Comoros score 131.7 out of 255, which is the 52% above.
It cannot see everything. Both flags are stretched to the same box, so Indonesia and Monaco, which differ in nothing else, are measured as their reds rather than as identical. The look-alikes page sets out the rest.
Also close
The flags the pipeline measured nearest to these two.