500 euro note rapidly so that in the first 7 years (up to December 2008) there were 530,064,413 five hundred euro banknotes in circulation. Subsequently, the rate of increase was radically slowed. In August 2018, there were approximately 515,000,000 banknotes in circulation (decreased from 614,000,000 in 2015). It is the second least widely circulated denomination, accounting for 2.4% of the total banknotes. It is the largest note measuring 160 × 82 mm and has a purple colour scheme. The five hundred euro banknotes depict bridges and arches/doorways in modern architecture (around the late 20th century). The five hundred euro note contains several complex
1937 Series (banknotes) of Canada modified the colours used from the 1935 Series in part to address the issue that some banknotes could not be easily distinguished in low light. This was particularly problematic for the $1 and $2 banknotes, which "The St. Maurice Valley Chronicle" of Trois-Rivières stated in an article that the green hue of the $1 banknote and the blue hue of the $2 banknote made the obverse appear similar, and that the more distinct colours of the reverse could be "confused in artificial light". The Bank of Canada chose to design the $2 banknotes using a terracotta red called