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<meta property="og:description" content="Applies alpha (or opacity) to a color in hexadecimal form by
converting opacity in the [0, 1] range to hex in the [0, 255] range
and appending to the hex color." />
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    <h1>Add alpha to hex color</h1>
    <small class="dont-index">Source: <a href='https://github.com/gadenbuie/xaringanthemer/blob/master/R/color.R'><code>R/color.R</code></a></small>
    <div class="hidden name"><code>apply_alpha.Rd</code></div>
    </div>

    <div class="ref-description">
    <p>Applies alpha (or opacity) to a color in hexadecimal form by
converting opacity in the <code>[0, 1]</code> range to hex in the <code>[0, 255]</code> range
and appending to the hex color.</p>
    </div>

    <pre class="usage"><span class='fu'>apply_alpha</span>(<span class='no'>color_hex</span>, <span class='kw'>opacity</span> <span class='kw'>=</span> <span class='fl'>0.5</span>)</pre>

    <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
    <table class="ref-arguments">
    <colgroup><col class="name" /><col class="desc" /></colgroup>
    <tr>
      <th>color_hex</th>
      <td><p>A character string representing a hex color</p></td>
    </tr>
    <tr>
      <th>opacity</th>
      <td><p>Desired opacity of the output color</p></td>
    </tr>
    </table>


    <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
    <pre class="examples"><div class='input'><span class='no'>blue</span> <span class='kw'>&lt;-</span> <span class='st'>"#0e6ba8"</span>
<span class='no'>blue_transparent</span> <span class='kw'>&lt;-</span> <span class='fu'>apply_alpha</span>(<span class='no'>blue</span>)

<span class='kw'>if</span> (<span class='fu'><a href='https://rdrr.io/r/base/ns-load.html'>requireNamespace</a></span>(<span class='st'>"scales"</span>, <span class='kw'>quietly</span> <span class='kw'>=</span> <span class='fl'>TRUE</span>)) {
  <span class='kw pkg'>scales</span><span class='kw ns'>::</span><span class='fu'><a href='https://scales.r-lib.org//reference/show_col.html'>show_col</a></span>(<span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span>(<span class='no'>blue</span>, <span class='no'>blue_transparent</span>))
}</div><div class='img'><img src='apply_alpha-1.png' alt='' width='700' height='433' /></div><div class='input'>
</div></pre>
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