Look-alikes · Romania · Chad
Romania vs Chad
Two copies of one picture are 0% apart and the widest pair in the world is 100%. The app files them together as The Chad–Romania Problem.
Romania and Chad are 4% apart. No two of the world's 32,079 flag pairs are closer.
Romania and Chad run the same three bands in the same order at the same shape. Chad's blue is the darker.
Where the difference is
Each colour on Romania, matched with the nearest colour on Chad, and how far apart the two are, the number is the worst single tile, out of 255.
- #002b7f#00266427
- #ce1126#c60c3010
- #fcd116#fecb0022
The colour that separates them is a blue: #002b7f against #002664, 27 apart.
How they are put together
Both were measured as vertical bands.
Both run blue, yellow and red from the pole.
Both are flown at the same shape, 1.50 : 1.
What each one carries
Neither carries a charge. The difference is all colour and shape.
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 Romania and Chad score 10.7 out of 255, which is the 4% 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.