diff --git a/.changeset/two-flowers-heal.md b/.changeset/two-flowers-heal.md
new file mode 100644
index 0000000000..aae9acedb0
--- /dev/null
+++ b/.changeset/two-flowers-heal.md
@@ -0,0 +1,5 @@
+---
+"@khanacademy/perseus": patch
+---
+
+Fix color of Mafs line segments
diff --git a/packages/perseus/src/widgets/interactive-graphs/mafs-styles.css b/packages/perseus/src/widgets/interactive-graphs/mafs-styles.css
index 307be48f08..1316db2281 100644
--- a/packages/perseus/src/widgets/interactive-graphs/mafs-styles.css
+++ b/packages/perseus/src/widgets/interactive-graphs/mafs-styles.css
@@ -23,7 +23,7 @@
 }
 
 .MafsView .movable-segment {
-    --mafs-segment-stroke-color: var(--mafs-line-color);
+    --mafs-segment-stroke-color: rgba(33, 36, 44, 0.64); /* offBlack64 */
     --mafs-segment-stroke-weight: 2px;
 }