                 
  <div>
            <span class="signature"><code>const BlendMode(18)</code></span>
          </div>
        </dd>
        <dt id="darken" class="constant">
          <span class="name ">darken</span>
          <span class="signature">&#8594; const <a href="dart-ui/BlendMode-class.html">BlendMode</a></span>
                  </dt>
        <dd>
          <p>Composite the source and destination image by choosing the lowest value
from each color channel.</p>
<p>The opacity of the output image