r confusing
if these palettes are constructed very differently (e.g., as in the highly
saturated base R palettes).
</p>
<p>More specifically, the following palettes can be visualized well: </p>

<ul>
<li><p> Qualitative with (approximately) constant luminance. In this case,
<code>hclplot</code> shows a hue-chroma plane (in polar coordinates), keeping
luminance at a fixed level (by default displayed in the main title of
the plot). If the luminance is, in fact, not approximately constant,
the luminance varies