Blue is the colour between violet and green on the optical spectrum of visible light. Human eyes perceive blue when observing light with a wavelength between 450 and 495 nanometres.
The United Kingdom is a Sovereign island country. It consists of 4 constituent countries, England, Northern Ireland, Scotland and Wales. Great Britain is the name of the island which consists of England, Scotland and Wales.The full name is the United Kingdom of Great Britain and Northern Ireland. The UK is part of the continent of Europe.he United Kingdom is a Sovereign island country. It consists of 4 constituent countries, England, Northern Ireland, Scotland and Wales. Great Britain is the name of the island which consists of England, Scotland and Wales.
Located in the continent of Europe, United Kingdom covers 241,930 square kilometers of land and 1,680 square kilometers of water, making it the 80th largest nation in the world with a total area of 243,610 square kilometers. The United Kingdom was founded as a distinct and original nation in 1066.