# Geneva Conventions Act 1957, Paragraph 4


The international distinctive sign of civil defence is an equilateral blue triangle on an orange ground when used for the protection of civil defence organisations, their personnel, buildings and mategriel and for civilian shelters.

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Source: https://www.legislation.gov.uk/ukpga/Eliz2/5-6/52/schedule/FIFTH/part/IV/chapter/26/paragraph/4 (the official version)
Page: https://openlegislation.uk/geneva-conventions-act-1957/schedule-FIFTH/part-IV/chapter-26/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.