Question

why no flag in the world is purple?​

Answer 1

Answer:

In the olden times, when these flags were designed, purple colour was too expensive since this colour was made with a lot of chemicals and rare plants.  Another reason is, purple was considered as the colour of mourning.

Answer 2

Answer:

It's not because the color is considered universally unfashionable: Its absence from flags has more to do with practicality. ... The color's status was forever changed in 1856, when a British university student named William Henry Perkin discovered a way to make purple dye synthetically.

Explanation:

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