ally listing the underlying parameters/coordinates), and a <code>plot</code>
method that creates a <code>swatchplot</code> with suitable labels.
</p>



<h3>Value</h3>

<p><code>qualitative_hcl</code>, <code>sequential_hcl</code>, <code>diverging_hcl</code> return
a vector of <code>n</code> color strings (hex codes).
</p>
<p>The function <code>hcl_palettes</code> returns a data frame of class <code>"hcl_palettes"</code>
where each row contains information about one of the requested palettes (name, type,
HCL