This chart (public domain from Wikimedia Commons) illustrates the question. Is there an explanation for why the Union Jack have a darker shade of blue than the original Scottish flag that it's base
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Experts flag up end of union jack if Scotland votes for
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File:Flags of the Union Jack.svg - Wikimedia Commons
Majority of Brits can't tell if the UK flag is being flown upside
The British Union jack flag but it has Wales and Northern Ireland
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united kingdom - If the Union Jack joins the flag of England and Scotland, why does it have a different shade of blue than the Scottish flag? - History Stack Exchange, union jack
UK flag if a United Ireland joined the UK. Also including Wales
Union Jack United Kingdom Flag Vector Images - FreePatternsArea