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adding page for hwb() #3141

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Mar 15, 2021
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adding page for hwb() #3141

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67ab750
adding page for hwb()
rachelandrew Mar 15, 2021
b151b9c
fix
rachelandrew Mar 15, 2021
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55 changes: 55 additions & 0 deletions files/en-us/web/css/color_value/hwb()/index.html
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---
title: hwb()
slug: Web/CSS/color_value/hwb()
tags:
- CSS
- CSS Data Type
- Data Type
- Reference
- Web
- color
- hwb
---
<div>{{CSSRef}}</div>

<p>The <strong><code>hwb()</code></strong> functional notation expresses a given color according to its hue, whitness, and blackness. An optional alpha component represents the color's transparency.</p>

<h2 id="Syntax">Syntax</h2>

<pre class="brush: css">hwb(194 0% 0%) /* #00c3ff */
hwb(194 0% 0% / .5) /* #00c3ff with 50% opacity */
hwb(194, 0%, 0%, .5); /* with comma-separated values */
</pre>

<h3 id="Values">Values</h3>

<dl>
<dt>Functional notation: <code>hwb[a](H W B[/ A])</code></dt>
<dd><code>H</code> (hue) is an {{cssxref("&lt;angle&gt;")}} of the color circle given in <code>deg</code>s, <code>rad</code>s, <code>grad</code>s, or <code>turn</code>s in {{SpecName("CSS4 Colors","#the-hsl-notation")}}. When written as a unitless {{cssxref("&lt;number&gt;")}}, it is interpreted as degrees, as specified in {{SpecName("CSS3 Colors", "#hsl-color")}}. By definition, red=0deg=360deg, with the other colors spread around the circle, so green=120deg, blue=240deg, etc. As an <code>&lt;angle&gt;</code>, it implicitly wraps around such that -120deg=240deg, 480deg=120deg, -1turn=1turn, etc.</dd>
<dd><code>W</code> (whiteness) specifies the amount of white to mix in, as a percentage from 0% (no whiteness) to 100% (full whiteness).</dd>
<dd><code>B</code> (blackness) specifies the amount of black to mix in, also from 0% (no blackness) to 100% (full blackness).</dd>
<dd><code>A</code> (alpha) can be a {{cssxref("&lt;number&gt;")}} between <code>0</code> and <code>1</code>, or a {{cssxref("&lt;percentage&gt;")}}, where the number <code>1</code> corresponds to <code>100%</code> (full opacity).</dd>
</dl>

<table class="standard-table">
<thead>
<tr>
<th scope="col">Specification</th>
<th scope="col">Status</th>
<th scope="col">Comment</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName('CSS4 Colors', '#the-hwb-notation')}}</td>
<td>{{Spec2('CSS4 Colors')}}</td>
<td>Initial definition</td>
</tr>
</tbody>
</table>

<h2 id="Browser_compatibility">Browser compatibility</h2>

<p>{{Compat("css.types.color.hwb")}}</p>

<p>The <code>hwb()</code> value has yet to be implemented in any browser. <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1352755">Mozilla bug: 1352755</a></p>