Brunswick green

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Brunswick green is a common name for green pigments made from copper compounds, although the name has also been used for other formulations that produce a similar hue, such as mixtures of chrome yellow and Prussian blue. The pigment is named after Braunschweig, Germany (also known as Brunswick in English) where it was first manufactured. It is a deep, dark green, which may vary from intense to very dark, almost black.

"Deep Brunswick Green" is commonly recognised as part of the British racing green spectrum, the national auto racing colour of the United Kingdom. A similar colour, also called "Brunswick green", was the official colour for passenger locomotives of the nationalised British Railways. A similar—but slightly brighter—shade was used by the Great Western Railway.

The colour used by the Pennsylvania Railroad for locomotives was often called "Brunswick green", but officially was termed Dark Green Locomotive Enamel (DGLE). This was a shade of green so dark as to be almost black, but which turned greener with age and weathering as the copper compounds further oxidized. See PRR equipment colors and painting for more details.

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