diff --git a/src/lib/form-field/form-field-legacy.scss b/src/lib/form-field/form-field-legacy.scss
index f0be9791b866..77344f0999f6 100644
--- a/src/lib/form-field/form-field-legacy.scss
+++ b/src/lib/form-field/form-field-legacy.scss
@@ -58,6 +58,11 @@ $mat-form-field-legacy-underline-height: 1px !default;
   &.mat-form-field-disabled .mat-form-field-underline {
     background-position: 0;
     background-color: transparent;
+
+    @include cdk-high-contrast {
+      border-top-style: dotted;
+      border-top-width: 2px;
+    }
   }
 
   &.mat-form-field-invalid:not(.mat-focused) .mat-form-field-ripple {
diff --git a/src/lib/form-field/form-field-standard.scss b/src/lib/form-field/form-field-standard.scss
index 4910f3efa458..16a8ce349c9f 100644
--- a/src/lib/form-field/form-field-standard.scss
+++ b/src/lib/form-field/form-field-standard.scss
@@ -42,6 +42,11 @@ $mat-form-field-standard-padding-top: 0.75em !default;
   &.mat-form-field-disabled .mat-form-field-underline {
     background-position: 0;
     background-color: transparent;
+
+    @include cdk-high-contrast {
+      border-top-style: dotted;
+      border-top-width: 2px;
+    }
   }
 
   // Note that we need this specific of a selector because we don't want