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      <img src="../logo.png" class="logo" alt=""><h1>Grey scale colors of Johns Hopkins University (JHU), USA</h1>
      <small class="dont-index">Source: <a href="https://github.com/hneth/unicol/blob/HEAD/R/JHU.R" class="external-link"><code>R/JHU.R</code></a></small>
      <div class="d-none name"><code>jhu_4_gray.Rd</code></div>
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    <div class="ref-description section level2">
    <p><code>jhu_4_gray</c