diff --git a/api/index.html b/api/index.html
index 00d101ad..f79860d5 100644
--- a/api/index.html
+++ b/api/index.html
@@ -74,7 +74,6 @@ <h1>API Reference</h1>
 <li><a href='#differenceCie94'>differenceCie94</a></li>
 <li><a href='#differenceCiede2000'>differenceCiede2000</a></li>
 <li><a href='#differenceCmc'>differenceCmc</a></li>
-<li><a href='#differenceDin99o'>differenceDin99o</a></li>
 <li><a href='#differenceEuclidean'>differenceEuclidean</a></li>
 <li><a href='#differenceHueChroma'>differenceHueChroma</a></li>
 <li><a href='#differenceHueNaive'>differenceHueNaive</a></li>
@@ -824,9 +823,6 @@ <h3>CIE color difference formulas</h3>
 </blockquote>
 <p>The HyAB formula combines the Euclidean and <a href="https://en.wikipedia.org/wiki/Taxicab_geometry">city block</a> distance and has been experimentally shown to work better for large color differences than CIEDE2000, while still holding up well for smaller color differences, making it a <em>&quot;good candidate formula for image processing and computer vision applications&quot;</em>.</p>
 <h3>Other difference formulas</h3>
-<p><a id="differenceDin99o" href="#differenceDin99o">#</a> <strong>differenceDin99o</strong>()</p>
-<p><span aria-label='Source:'>☞</span> <a href="https://github.com/evercoder/culori/blob/main/src/difference.js">src/difference.js</a></p>
-<p>Computes the <a href="https://de.wikipedia.org/wiki/DIN99-Farbraum#Farbabstandsformel">DIN99o</a> ΔE*<sub>99o</sub> color difference between the colors <em>a</em> and <em>b</em>. The computation is done in the <code>dlab</code> color space.</p>
 <p><a id="differenceKotsarenkoRamos" href="#differenceKotsarenkoRamos">#</a> <strong>differenceKotsarenkoRamos</strong>()</p>
 <p><span aria-label='Source:'>☞</span> <a href="https://github.com/evercoder/culori/blob/main/src/difference.js">src/difference.js</a></p>
 <p>Computes the <a href="http://www.progmat.uaem.mx:8080/artVol2Num2/Articulo3Vol2Num2.pdf">Kotsarenko/Ramos</a> color difference between the colors <em>a</em> and <em>b</em>. This is a weighted Euclidean distance in the <code>yiq</code> color space.</p>
diff --git a/color-spaces/index.html b/color-spaces/index.html
index b0c2582d..709b4817 100644
--- a/color-spaces/index.html
+++ b/color-spaces/index.html
@@ -431,7 +431,7 @@ <h4><code>lchuv</code></h4>
 <p>Serialized as <code>color(--lchuv l c h)</code>, with the <code>none</code> keyword for any missing color channel. An explicit <code>alpha &lt; 1</code> is included as <code> / alpha</code>.</p>
 <p>Does not have gamut limits.</p>
 <h3>DIN99 Lab / LCh</h3>
-<p>The <a href="https://de.wikipedia.org/wiki/DIN99-Farbraum">DIN99</a> color space &quot;squishes&quot; the CIELAB D65 color space to obtain an <a href="#culoriDifferenceDin99o">effective color difference</a> metric that can be expressed as a simple Euclidean distance. The latest iteration of the the standard, DIN99o, is available in Cartesian (<code>dlab</code>) and plar (<code>dlch</code>) form.</p>
+<p>The <a href="https://de.wikipedia.org/wiki/DIN99-Farbraum">DIN99</a> color space &quot;squishes&quot; the CIELAB D65 color space to obtain an <a href="#culoriDifferenceDin99o">effective color difference</a> metric that can be expressed as a simple Euclidean distance. The latest iteration of the the standard, DIN99o, is available in Cartesian (<code>dlab</code>) and polar (<code>dlch</code>) form.</p>
 <blockquote>
 <p><a href="https://search.worldcat.org/title/Industrial-color-physics/oclc/663097553"><em>Industrial Color Physics</em></a>, Georg A. Klein, Springer (2010)
 <a href="https://www.beuth.de/en/standard/din-6176/292836682">DIN 6176</a>, <em>Colorimetric determination of colour differences of object colours according to the DIN99o formula</em></p>