diff --git a/docs/user/README.md b/docs/user/README.md
index 4589addccc..5b425e8f81 100644
--- a/docs/user/README.md
+++ b/docs/user/README.md
@@ -184,7 +184,9 @@ We support several modifiers that allow you to refer to scopes relative to the i
 
 Here is a diagram of the possible relative / ordinal modifiers using the `funk` scope as an example:
 
-![Relative ordinal diagram](images/relative_ordinal.png)
+<div class="dark-mode-invert">
+  ![Relative ordinal diagram](images/relative_ordinal.png)
+</div>
 
 ([Image source](https://github.com/cursorless-dev/cursorless/blob/main/docs/user/images/relative_ordinal.tex))
 
diff --git a/packages/cursorless-org-docs/src/css/custom.css b/packages/cursorless-org-docs/src/css/custom.css
index 090404f5fd..911fe1a5d7 100644
--- a/packages/cursorless-org-docs/src/css/custom.css
+++ b/packages/cursorless-org-docs/src/css/custom.css
@@ -16,3 +16,7 @@
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     no-repeat;
 }
+
+[data-theme="dark"] .dark-mode-invert {
+  filter: invert(90%) hue-rotate(180deg);
+}