Political colours are colours used to represent a political party, either officially or unofficially. Parties in different countries with similar ideologies sometimes use similar colours. For example, the colour red symbolises left-wing ideologies in many countries (cf. Red Flag, Red Army, Red Scare). However, the political associations of a given colour vary from country to country; for example, red is also the colour associated with the conservative Republican Party in the United States. Politicians making public appearances will often identify themselves by wearing rosettes, flowers or ties in the colour of their political party.
Blue is usually associated with conservative parties, originating from its use by the Tory party (the predecessor of the Conservative Party) in the United Kingdom.
Buff was the colour of the Whig faction in British politics from the early 18th century until the middle of the 19th century. As such it is sometimes used to represent the current political left (in opposition to blue, which represented the Tories and then the Conservatives and political right.)
Green is notably the colour for both environmentalist and Islamic political parties and movements.
Orange is the traditional colour of the Christian democrats, and it can also represent various kinds of populist parties. Such is the case in Austria, Germany, France, Portugal, Switzerland, Finland, Romania, Hungary, Slovakia, Czech Republic and Turkey.