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File:Map of United States accessible colors shown.svg

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Original file (SVG file, nominally 548 × 349 pixels, file size: 126 KB)

Summary

Description
English: A map of the United States showing four colors. According to the Four color theorem, only four colors are needed to complete a map containing any type of shapes provided that two touching shapes share a border of at least two points (a line).

This colouring is not the only way to four-colour the map: for example, Florida could be orange.

This graphic uses a colour palette accessible to colour blind people.
Date
Source

This file was derived from: Map of United States vivid colors shown.svg

Modifications: recoloured for colour-blind accessibility, made all borders black, as different border types are irrelevant to the four-colour theorem being illustrated.
Author w:User:Derfel73, w:User:Dbenbenn, w:User:Strangerpete, inductiveload
This image relies, or partly relies, on colours convey information. The colors used have been chosen to remain visually distinct even to viewers with colour blindness. When modifying this image, make sure that the result remains accessible to colour-blind users.

Licensing

w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

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24 January 2021

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Date/TimeThumbnailDimensionsUserComment
current15:02, 24 January 2022Thumbnail for version as of 15:02, 24 January 2022548 × 349 (126 KB)Inductiveloadc:User:Rillke/bigChunkedUpload.js:
14:40, 24 January 2022Thumbnail for version as of 14:40, 24 January 2022548 × 349 (127 KB)Inductiveloadc:User:Rillke/bigChunkedUpload.js: Make RI/NY different colours, as they share a water border. Technically not relevant in this diagram, but removes doubt
14:34, 24 January 2022Thumbnail for version as of 14:34, 24 January 2022548 × 349 (126 KB)Inductiveloadc:User:Rillke/bigChunkedUpload.js:

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