Big Ben: Elizabeth Tower's famous clock face goes 'Prussian blue'

The North Dial of the Elizabeth Tower was unveiled on Thursday revealing the hands and numbers in its original Prussian blue colour.

The clock faces which looks out over Whitehall and the Embankment, is now fully visible after the surrounding scaffolding was removed and some tourists have been left surprised at the new blue hue.

The last time anyone would have seen a blue, rather than black, clock face on the north dial was before the 1930s.

The precise shade of blue to use was decided following extensive research into the Victorian tower's initial colour scheme, in consultation with Historic England.

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Elizabeth Tower restoration
Scaffolding covers the Elizabeth Tower, known as Big Ben, as part of restoration works which will take up to four years to complete. Picture date: Sunday October 15th, 2017. Photo credit should read: Matt Crossick/ EMPICS Entertainment.
Workers at the top of scaffolding erected around the Elizabeth Tower, also known as Big Ben, during ongoing conservation works at the Houses of Parliament, Westminster, London.
The clock hands of Elizabeth Tower at the Palace of Westminster have been removed for maintenance and restoration work as the tower is undergoing a £61m refurbishment, up from the original estimate of £29m.
Scaffolding covers the Elizabeth Tower, known as Big Ben, as part of restoration works which will take up to four years to complete. Picture date: Sunday October 15th, 2017. Photo credit should read: Matt Crossick/ EMPICS Entertainment.
Scaffolding covers the Elizabeth Tower, known as Big Ben, as part of restoration works which will take up to four years to complete. Picture date: Sunday October 15th, 2017. Photo credit should read: Matt Crossick/ EMPICS Entertainment.
The Elizabeth Tower, which houses Big Ben, is seen through scaffolding around the Palace of Westminster, London. The tower is undergoing a three-year restoration project to conserve the structure and famous clock. Picture date: Thursday August 3rd, 2017. Photo credit should read: Matt Crossick/ EMPICS Entertainment.
Workers stand on the scaffolding in front of the newly revealed restored north dial of the clock on Elizabeth Tower, commonly known by the name of the bell Big Ben, at the Palace of Westminster, home to the Houses of Parliament, in London on March 21, 2019. - The north dial of the famous clock was revealed after undergoing repairs as part of the Elizabeth Tower conservation project that has seen the whole tower covered in scaffolding and silenced for months. (Photo by Tolga AKMEN / AFP) (Photo credit should read TOLGA AKMEN/AFP/Getty Images)
LONDON, UNITED KINGDOM - 2018/10/29: Big Ben's clock face seen covered up as it undergoes £61m restoration of the mechanism, clock face and tower. (Photo by Dinendra Haria/SOPA Images/LightRocket via Getty Images)
LONDON, UNITED KINGDOM - MARCH 31: The iconic Elizabeth tower commonly reffered as Big Ben has been covered in scaffolding as repairs are undertaken as part of a £3.5 billion restoration program at the Palace of Westminster on March 31, 2018 in England. PHOTOGRAPH BY Amer Ghazzal / Barcroft Images (Photo credit should read Amer Ghazzal / Barcroft Images / Barcroft Media via Getty Images)
LONDON, ENGLAND - FEBRUARY 21: Work men move scaffolding on the Elizabeth Tower commonly known as Big Ben on February 21, 2018 in London, England. MPs will leave the Palace of Westminster in the next decade as £3.5bn of restoration work is carried out on the building. (Photo by Jack Taylor/Getty Images)
The Elizabeth Tower, commonly called Big Ben stands floodlit after Britain's Prime Minister Theresa May won a confidence vote by Conservative party members on December 12, 2018. - By seeing off a revolt by her own MPs, British Prime Minister Theresa May has once again proved her ability to survive a political crisis -- but in the process acknowledged her time in office is limited. (Photo by Niklas HALLE'N / AFP) (Photo credit should read NIKLAS HALLE'N/AFP/Getty Images)
Workers stand on the scaffolding in front of the newly revealed restored north dial of the clock on Elizabeth Tower, commonly known by the name of the bell Big Ben, at the Palace of Westminster, home to the Houses of Parliament, in London on March 21, 2019. - The north dial of the famous clock was revealed after undergoing repairs as part of the Elizabeth Tower conservation project that has seen the whole tower covered in scaffolding and silenced for months. (Photo by Tolga AKMEN / AFP) (Photo credit should read TOLGA AKMEN/AFP/Getty Images)
Work is carried out on the face of the clock on the Elizabeth Tower, Westminster, London.
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The major restoration projection currently ongoing at the tower, designed by Sir Charles Barry and Augustus Welby Pugin in the 1850s, will be fully complete in 2021.

The landmark was silenced in August 2017 but the clock has since been occasionally restarted for national events, such as Christmas and Armistice Day.

The Elizabeth Tower, which houses the Great Clock and the Great Bell - known as Big Ben - last underwent major building in 1983-85.

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