 black and gray colors  
used by the <a href="https://ethz.ch/de.html" class="external-link">ETH Zürich</a>, Switzerland.</p>
    </div>

    <div id="ref-usage">
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="va">eth_pal_3</span></span></code></pre></div>
    </div>

    <div id="format">
    <h2>Format</h2>
    <p>An object of class <code>character</code> of length 7.</p>
    </div>
    <div id="source">
    <h2>Source</h2>
    <p>Color definitions are based on 
<a href="h