HL7 Terminology (THO)
7.2.0 - Publication International flag

This page is part of the HL7 Terminology (v7.2.0: Release) based on FHIR (HL7® FHIR® Standard) v5.0.0. This is the current published version. For a full list of available versions, see the Directory of published versions

: RGB Values for Color

Active as of 2026-06-08

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<NamingSystem xmlns="http://hl7.org/fhir">
  <id value="color-rgb"/>
  <language value="en"/>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: NamingSystem color-rgb</b></p><a name="color-rgb"> </a><a name="hccolor-rgb"> </a><h3>Summary</h3><table class="grid"><tr><td>Defining URL</td><td>http://terminology.hl7.org/NamingSystem/color-rgb</td></tr><tr><td>Version</td><td>20260630</td></tr><tr><td>Name</td><td>ColorRGB</td></tr><tr><td>Title</td><td>RGB Values for Color</td></tr><tr><td>Status</td><td>active</td></tr><tr><td>Definition</td><td><div><p>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).</p>
</div></td></tr><tr><td>Publisher</td><td>World Wide Web Consortium (W3C)</td></tr><tr><td>Copyright</td><td><div><p><a href="https://www.w3.org/copyright/software-license-2023/">Copyright</a> ©2026 World Wide Web Consortium. W3C® liability, trademark and permissive document license rules apply.</p>
</div></td></tr></table><h3>Identifiers</h3><table class="grid"><tr><td><b>Type</b></td><td><b>Value</b></td><td><b>Preferred</b></td><td><b>Comment</b></td></tr><tr><td>URI</td><td>http://terminology.hl7.org/CodeSystem/color-rgb</td><td>true</td><td/></tr><tr><td>OID</td><td>2.16.840.1.113883.4.642.4.2121</td><td>true</td><td/></tr><tr><td>URI</td><td>http://hl7.org/fhir/color-rgb</td><td/><td>The URI for this code system when it was published as part of the FHIR core specification.</td></tr></table></div>
  </text>
  <url value="http://terminology.hl7.org/NamingSystem/color-rgb"/>
  <version value="20260630"/>
  <name value="ColorRGB"/>
  <title value="RGB Values for Color"/>
  <status value="active"/>
  <kind value="codesystem"/>
  <date value="2026-06-08T00:00:00-00:00"/>
  <publisher value="World Wide Web Consortium (W3C)"/>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="https://www.w3.org/"/>
    </telecom>
  </contact>
  <responsible value="World Wide Web Consortium (W3C)"/>
  <description
               value="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
             value="[Copyright](https://www.w3.org/copyright/software-license-2023/) ©2026 World Wide Web Consortium. W3C® liability, trademark and permissive document license rules apply."/>
  <uniqueId>
    <type value="uri"/>
    <value value="http://terminology.hl7.org/CodeSystem/color-rgb"/>
    <preferred value="true"/>
  </uniqueId>
  <uniqueId>
    <type value="oid"/>
    <value value="2.16.840.1.113883.4.642.4.2121"/>
    <preferred value="true"/>
  </uniqueId>
  <uniqueId>
    <type value="uri"/>
    <value value="http://hl7.org/fhir/color-rgb"/>
    <comment
             value="The URI for this code system when it was published as part of the FHIR core specification."/>
  </uniqueId>
</NamingSystem>