International orange
shades of orange with red; used to set objects apart from their surroundings
International orange is a color used in the aerospace industry and maritime industry to set objects apart from their surroundings, similar to safety orange, but deeper and with a more reddish tone.
Variations
There are several variants of international orange.
Aerospace
The Advanced Crew Escape Suits pressure suits worn by NASA astronauts and the previous Launch Entry Suit use this color, as opposed to the lighter tone of safety orange used by the United States Air Force's high-altitude suits. This was also planned for the Constellation Space Suit systems that were to be flight-ready by 2015.
The Bell X-1, the first airplane to break the sound barrier, was also painted in International Orange.
Golden Gate Bridge
The tone of international orange used to paint the Golden Gate Bridge in San Francisco, California is slightly lighter than the standard international orange used by military contractors and in engineering, thus increasing its visibility to ships, but darker than the one used in aerospace. The international orange paint used on the Golden Gate Bridge is specially formulated to protect the bridge from the danger of rust from salt spray off the ocean, and from the moisture of the San Francisco fog that frequently rolls in from the Pacific Ocean through the Golden Gate to San Francisco Bay. The 25 de Abril Bridge in Lisbon, Portugal also uses this color.
Engineering
The adjacent box displays the generic, red tone of international orange used by military contractors and in engineering generally.
The source of this color is Federal Standard 595, a U.S. federal government standard set up in 1956 for paint colors which is mostly used by military contractors and also in engineering.
“International orange” enters the record as shades of orange with red; used to set objects apart from their surroundings. Crown Archives preserves that source wording while asking what International, orange and shades can confirm, complicate or overturn.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jul 5, 2026. The linked authority identifier is Q2529373. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2015 and 1956.
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This entry incorporates text from “International orange” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.