Lihimi Tɛmplet:CategoryBgColor/doc ni yi shɛli na

<noinclude>{{Documentation subpage}}</noinclude>
This template implements an [[Wikipedia:Manual of Style/Accessibility/Colors|accessible]] [[color scheme]] for text backgrounds based on a light [[Brewer palette]] called Pastel 2. The generated color code is used in {{tl|CellCategory}} and can be used as a parameter for [[:Category:Legend templates|legends]], [[:Category:Box templates|boxes]] and others. Original colors were lightened slightly to achieve WCAG AA with text and links (including inline citations) and may be revised when Wikipedia's default style changes. The order was also changed to promote the pairs least modified by lightening.

As a '''qualitative/categorical palette''', these colors should not be used with any specific meaning related to preference (good or bad) or magnitude (intensity, frequency, etc.), and may change in the future, maintaining only the property of serving to differentiate between categories. For comparison tables, see [[Template:Table cell templates|table cell templates]] associated with specific meanings.

Although the WCAG level guarantees the readability of the text, the [[lightness]] is about the same in all the colors produced, not following [[Color scheme|color universal design]] and, therefore, impacting some colorblind readers. Unfortunately, the only solution to this is to reduce lightness below WCAG AA levels for some colors, decreasing accessibility for many people. Therefore, if the category is important, it should also be represented as text in the article, not just as color.

The palette provides these colors for 8 categories:

{{Color box|{{CategoryBgColor|1}}|1}}
{{Color box|{{CategoryBgColor|2}}|2}}
{{Color box|{{CategoryBgColor|3}}|3}}
{{Color box|{{CategoryBgColor|4}}|4}}
{{Color box|{{CategoryBgColor|5}}|5}}
{{Color box|{{CategoryBgColor|6}}|6}}
{{Color box|{{CategoryBgColor|7}}|7}}
{{Color box|{{CategoryBgColor|8}}|8}}

== Usage example ==
Wikitext:
<syntaxhighlight lang="wikitext">
{{Legend inline |#{{CategoryBgColor|1}} |Category 1}}
{{Legend inline |#{{CategoryBgColor|2}} |Category 2}}
{{Legend inline |#{{CategoryBgColor|3}} |Category 3}}

...
|{{CellCategory|1|Info on category 1}}
|-
|{{CellCategory|3|Info on category 3}}
|-
|{{CellCategory|2|Info on category 2}}
...
</syntaxhighlight>

Result:

{{Legend inline |#{{CategoryBgColor|1}} |Category 1}}
{{Legend inline |#{{CategoryBgColor|2}} |Category 2}}
{{Legend inline |#{{CategoryBgColor|3}} |Category 3}}
{| class=wikitable
|{{CellCategory|1|Info on category 1}}
|-
|{{CellCategory|3|Info on category 3}}
|-
|{{CellCategory|2|Info on category 2}}
|}

== Code ==
<includeonly>{{#switch:{{SUBPAGENAME}}|doc|sandbox=|#default=
Code specific to this template:
:<code>{{ {{FULLPAGENAME}} }}</code>
{{{doc|}}}
}}</includeonly>

== TemplateData ==
{{TemplateData header}}
<templatedata>{
  "description": "A template for an accessible qualitative palette.",
  "params": {
    "1": {
      "label": "category",
      "description": "category index",
      "type": "number",
      "default": "?",
      "required": false,
      "suggested": true
    }
  },
  "format": "inline"
}</templatedata>

== See also ==
* [[Color coding in data visualization]]

<includeonly>{{Sandbox other||{{#switch:{{SUBPAGENAME}}|doc=|#default=
<!-- Categories below this line -->
[[Category:Color templates]]

}}}}</includeonly>