Look-alikes · Western Sahara · Sudan
Western Sahara vs Sudan
Two copies of one picture are 0% apart and the widest pair in the world is 100%.
Western Sahara and Sudan are 40% apart. They are closer than 96% of the flag pairs in the world.
Where the difference is
Each colour on Western Sahara, matched with the nearest colour on Sudan, and how far apart the two are, the number is the worst single tile, out of 255.
- #000000#0000000
- #007a3d#00722920
- #ffffff#ffffff0
- #c4111b#d2103425
The colour that separates them is a red: #c4111b against #d21034, 25 apart.
How they are put together
Both were measured as horizontal bands, a triangle at the pole.
What each one carries
Western Sahara carries a star and a crescent. Sudan 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 Western Sahara and Sudan score 102.3 out of 255, which is the 40% 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.