diff --git a/.changeset/pretty-socks-notice.md b/.changeset/pretty-socks-notice.md
new file mode 100644
index 0000000000..e8962cdf62
--- /dev/null
+++ b/.changeset/pretty-socks-notice.md
@@ -0,0 +1,5 @@
+---
+"@spectrum-css/swatch": minor
+---
+
+Reimplements support for the `spectrum-Swatch--lightBorder` class for swatches specifically in a swatch group.
diff --git a/components/swatch/index.css b/components/swatch/index.css
index bbe7825310..5b893cdd13 100644
--- a/components/swatch/index.css
+++ b/components/swatch/index.css
@@ -40,12 +40,14 @@
 	/* Light theme placeholder tokens */
 	.spectrum--light & {
 		--spectrum-swatch-border-color: rgba(0, 0, 0, 51%);
+		--spectrum-swatch-border-color-light: rgba(0, 0, 0, 20%);
 	}
 
 	/* Dark and Darkest theme placeholder tokens */
 	.spectrum--dark &,
 	.spectrum--darkest & {
 		--spectrum-swatch-border-color: rgba(255, 255, 255, 51%);
+		--spectrum-swatch-border-color-light: rgba(255, 255, 255, 20%);
 	}
 }
 
@@ -283,6 +285,14 @@
 	}
 }
 
+.spectrum-Swatch--lightBorder {
+	.spectrum-Swatch-fill {
+		&::before {
+			box-shadow: inset 0 0 0 var(--mod-swatch-border-thickness, var(--spectrum-swatch-border-thickness)) var(--highcontrast-swatch-border-color-light, var(--mod-swatch-border-color-light, var(--spectrum-swatch-border-color-light)));
+		}
+	}
+}
+
 .spectrum-Swatch-mixedValueIcon {
 	display: none;
 	pointer-events: none;
diff --git a/components/swatch/metadata/mods.md b/components/swatch/metadata/mods.md
index f9c636abd7..06d5eefd24 100644
--- a/components/swatch/metadata/mods.md
+++ b/components/swatch/metadata/mods.md
@@ -2,6 +2,7 @@
 | -------------------------------------------- |
 | `--mod-animation-duration-100`               |
 | `--mod-swatch-border-color`                  |
+| `--mod-swatch-border-color-light`            |
 | `--mod-swatch-border-color-selected`         |
 | `--mod-swatch-border-radius`                 |
 | `--mod-swatch-border-thickness`              |