{"id":"signal-flags","no":392,"name":"Signal Flags","ja":"国際信号旗","era":"1857–","family":"記号体系","kind":"スタイル","collection":"Dictionary expansion 21","addedAt":"2026-08-18","source":{"title":"The Flag Institute","url":"https://www.flaginstitute.org/"},"reference":{"status":"verified","pageUrl":"https://www.flaginstitute.org/","credit":"The Flag Institute","gallery":[{"imageUrl":"https://commons.wikimedia.org/wiki/Special:FilePath/ICS-flags.png?width=640","pageUrl":"https://commons.wikimedia.org/wiki/File:ICS-flags.png","credit":"国際信号旗の一覧 — Wikimedia Commons / Public domain"},{"imageUrl":"https://commons.wikimedia.org/wiki/Special:FilePath/International%20Code%203%3B%20International%20Code%204%20RMG%20RP%2020%202.jpg?width=640","pageUrl":"https://commons.wikimedia.org/wiki/File:International%20Code%203%3B%20International%20Code%204%20RMG%20RP%2020%202.jpg","credit":"信号旗の図版（グリニッジ海事博物館） — Wikimedia Commons / Public domain"}]},"essence":"海上で文字と定型文を伝える旗の体系。遠距離からの識別だけを目的に選ばれた高コントラストの幾何学は、機能が生んだ抽象デザインの傑作群になった。","cues":["高コントラストの幾何学","遠距離識別の設計","一旗一字と定型文","檣頭に連なる掲揚"],"intents":["信頼","技術","高揚"],"works":["遠くから確実に見分けさせる識別色とマークを設計するとき","海事や船を主題にしたグラフィックで、色と形の組を作るとき"],"recipe":{"type":"図形は縦横斜めの分割と十字と円に限り、細部を一切作らない","layout":"一枚に使う色は三色までとし、隣り合う旗と形を必ず変える","material":"彩度の高い赤と黄と青に白と黒を隣接させ、明度差を確保する"},"avoid":"配色だけ借りて図形を複雑にすると、縮小や逆光で輪郭が潰れ、遠距離で見分けるという前提が崩れる","colors":["#ffffff","#9f1619","#07015d"],"motif":"notation","pair":["heraldry","pictogram-system"],"study":["国際信号書","トラファルガーの信号","セマフォアとの併用"],"en":{"essence":"The flag system for spelling letters and set phrases at sea. High-contrast geometry chosen solely for distant legibility became a masterpiece collection of abstraction born from function.","cues":["High-contrast geometry","Designed for distance","One flag, one letter","Hoists strung to the masthead"],"works":["Designing marks and colors that must be told apart at long range","Building a set of colors and shapes for graphics on maritime themes"],"recipe":{"type":"Shapes limited to divisions, crosses and discs, with no fine detail","layout":"Three colors at most per flag, neighbors never sharing a shape","material":"Saturated red, yellow and blue set hard against white and black"},"avoid":"Borrowing the palette while complicating the shapes collapses the outline when reduced or backlit, and recognition at range fails.","study":["the International Code of Signals","the Trafalgar signal","use alongside semaphore"]},"links":{"page":"https://indexstyle.org/styles/signal-flags","json":"https://indexstyle.org/api/styles/signal-flags","designSpec":"https://indexstyle.org/styles/signal-flags/design.md","imagePrompt":"https://indexstyle.org/styles/signal-flags/prompt.txt"},"usage":{"license":"CC-BY-4.0","licenseName":"Creative Commons Attribution 4.0 International","licenseUrl":"https://creativecommons.org/licenses/by/4.0/","attribution":"IndexStyle — https://indexstyle.org","attributionUrl":"https://indexstyle.org","scope":"Original IndexStyle text and structured data. Reference images, quoted works, and third-party material are excluded and retain their own rights."}}