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.
Great Britain refers to England, Scotland and Wales.   When Northern Ireland is added, the country then gets its full,  official name of 'The United Kingdom of Great Brit â¦ ain and Northern  Ireland' and is represented as such at the United Nations, where  the UK is a permanent member of the Security Council.reat Britain is the largest island in the British Isles and includes the constituent countries of England, Scotland, a â¦ nd Wales which are all a part of the United Kingdom.