HL7 Terminology (THO)
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HL7 Terminology (THO), published by HL7 International - Vocabulary Work Group. This guide is not an authorized publication; it is the continuous build for version 7.2.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/UTG/ and changes regularly. See the Directory of published versions

: RGB Values for Color

Active as of 2026-06-18

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{
  "resourceType" : "CodeSystem",
  "id" : "color-rgb",
  "language" : "en",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: CodeSystem color-rgb</b></p><a name=\"color-rgb\"> </a><a name=\"hccolor-rgb\"> </a><p>This case-insensitive code system <code>http://terminology.hl7.org/CodeSystem/color-rgb</code> defines codes, but no codes are represented here</p></div>"
  },
  "url" : "http://terminology.hl7.org/CodeSystem/color-rgb",
  "identifier" : [
    {
      "system" : "urn:ietf:rfc:3986",
      "value" : "urn:oid:2.16.840.1.113883.4.642.4.2121"
    }
  ],
  "version" : "20260630",
  "name" : "ColorRGB",
  "title" : "RGB Values for Color",
  "status" : "active",
  "experimental" : false,
  "date" : "2026-06-18T18:31:46+00:00",
  "publisher" : "World Wide Web Consortium (W3C)",
  "contact" : [
    {
      "telecom" : [
        {
          "system" : "url",
          "value" : "https://www.w3.org/"
        }
      ]
    }
  ],
  "description" : "RGB values for color. Valid codes are #RRGGBB where RR, GG, and BB are two letter hex codes, values 00..ff. Codes are case insensitive. This code system does not define the 16 million+ valid RGB codes (terminology servers will need code to support the RGB grammar).",
  "copyright" : "[Copyright](https://www.w3.org/copyright/software-license-2023/) ©2026 World Wide Web Consortium. W3C® liability, trademark and permissive document license rules apply.",
  "caseSensitive" : false,
  "compositional" : true,
  "content" : "not-present"
}