diff --git a/UNRELEASED.md b/UNRELEASED.md
index fdd954833aa..b7770f0bf8f 100644
--- a/UNRELEASED.md
+++ b/UNRELEASED.md
@@ -22,6 +22,7 @@ Use [the changelog guidelines](https://git.io/polaris-changelog-guidelines) to f
 - Fixed `ResourceList.Item` interaction states from being incorrectly applied ([#1312](https://github.com/Shopify/polaris-react/pull/1312)
 - Fixed selected state for date picker in windows high contrast mode ([#1342](https://github.com/Shopify/polaris-react/pull/1342))
 - Added background into media query for Microsoft high contrast to fix skeleton accessibility. ([#1341](https://github.com/Shopify/polaris-react/pull/1341))
+- Added high contrast colour to `Loading` to make it visible in the high contrast mode in Windows ([#1389](https://github.com/Shopify/polaris-react/pull/1389))
 - Fixed the position calculation of the `PositionedOverlay` component after scroll. ([#1382](https://github.com/Shopify/polaris-react/pull/1382))
 
 ### Documentation
diff --git a/src/components/Frame/components/Loading/Loading.scss b/src/components/Frame/components/Loading/Loading.scss
index 3362a63b2c6..6ea4b382702 100644
--- a/src/components/Frame/components/Loading/Loading.scss
+++ b/src/components/Frame/components/Loading/Loading.scss
@@ -13,4 +13,8 @@ $height: rem(3px);
   transform-origin: 0;
   background-color: color('teal');
   transition: transform duration(slowest) easing(out);
+
+  @media screen and (-ms-high-contrast: active) {
+    background-color: ms-high-contrast-color('selected-text-background');
+  }
 }