Hipgnosis co-founder Aubrey Powell recalls the band's iconic art design for 'The Dark Side of the Moon,' which turned 50 years old this month.

The phenomenon of these two iconic works of art matching perfectly is known as "The Dark Side of the Rainbow" and has been wowing fans for decades.

The only difference between the photos is that one has been put in front of a black background (the maroon picture), while the other (the pink picture) has been placed in front of a white background.

Graphic designer Storm Thorgerson on creating iconic record sleeve for Pink Floyd's 'Dark Side of the Moon' album.