diff --git a/src/components/toolbar/toolbar.md.scss b/src/components/toolbar/toolbar.md.scss
index fa37b1af7f..9df6e00357 100644
--- a/src/components/toolbar/toolbar.md.scss
+++ b/src/components/toolbar/toolbar.md.scss
@@ -140,7 +140,7 @@ $toolbar-button-md-strong-font-weight:   bold !default;
       border-color: $color-contrast;
     }
 
-    @each $color-name, $color-base, $color-contrast in get-colors($colors-md) {
+    @each $color-name, $color-base, $color-contrast in get-colors($colors-md, md) {
       @include md-bar-button-default($color-name, $color-base, $color-contrast);
       @include md-bar-button-outline($color-name, $color-base, $color-contrast);
       @include md-bar-button-solid($color-name, $color-base, $color-contrast);
@@ -384,7 +384,7 @@ $toolbar-button-md-strong-font-weight:   bold !default;
 @include md-bar-button-default(default, $toolbar-md-button-color, color-contrast($colors-md, $toolbar-md-button-color, md));
 @include md-bar-button-default(clear, $toolbar-md-button-color, color-contrast($colors-md, $toolbar-md-button-color, md));
 
-@each $color-name, $color-base, $color-contrast in get-colors($colors-md) {
+@each $color-name, $color-base, $color-contrast in get-colors($colors-md, md) {
   @include md-toolbar-theme($color-name, $color-base, $color-contrast);
   @include md-bar-button-default($color-name, $color-base, $color-contrast);
   @include md-bar-button-outline($color-name, $color-base, $color-contrast);
diff --git a/src/themes/ionic.functions.scss b/src/themes/ionic.functions.scss
index 682ea4734b..6a079fb737 100644
--- a/src/themes/ionic.functions.scss
+++ b/src/themes/ionic.functions.scss
@@ -271,7 +271,7 @@
 // @param {Map} $colors - colors map
 // @return {List} $color-name, $color-base, $color-contrast
 // ----------------------------------------------------------
-@function get-colors($colors) {
+@function get-colors($colors, $custom-contrast-mode: null) {
   $colors-list: ();
 
   @each $color-name, $color-value in $colors {
@@ -283,7 +283,7 @@
       $color-contrast: map-get($color-value, contrast);
     } @else {
       $color-base: $color-value;
-      $color-contrast: color-inverse($color-value);
+      $color-contrast: color-contrast($colors, $color-value, $custom-contrast-mode);
     }
 
     $colors-list: append($colors-list, ($color-name, $color-base, $color-contrast), comma);
@@ -291,3 +291,4 @@
 
   @return $colors-list;
 }
+