diff --git a/api/current.txt b/api/current.txt
index 96c47ed52ca27..4f907a76098db 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -989,6 +989,7 @@ package android {
     field public static final int preferenceStyle = 16842894; // 0x101008e
     field public static final int presentationTheme = 16843712; // 0x10103c0
     field public static final int previewImage = 16843482; // 0x10102da
+    field public static final int primaryContentAlpha = 16843367; // 0x1010267
     field public static final int priority = 16842780; // 0x101001c
     field public static final int privateImeOptions = 16843299; // 0x1010223
     field public static final int process = 16842769; // 0x1010011
diff --git a/api/system-current.txt b/api/system-current.txt
index f2e42ebafa52a..46aba0b7985e3 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -1098,6 +1098,7 @@ package android {
     field public static final int preferenceStyle = 16842894; // 0x101008e
     field public static final int presentationTheme = 16843712; // 0x10103c0
     field public static final int previewImage = 16843482; // 0x10102da
+    field public static final int primaryContentAlpha = 16843367; // 0x1010267
     field public static final int priority = 16842780; // 0x101001c
     field public static final int privateImeOptions = 16843299; // 0x1010223
     field public static final int process = 16842769; // 0x1010011
diff --git a/api/test-current.txt b/api/test-current.txt
index 96ddfc793c2b3..0440967e38b11 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -989,6 +989,7 @@ package android {
     field public static final int preferenceStyle = 16842894; // 0x101008e
     field public static final int presentationTheme = 16843712; // 0x10103c0
     field public static final int previewImage = 16843482; // 0x10102da
+    field public static final int primaryContentAlpha = 16843367; // 0x1010267
     field public static final int priority = 16842780; // 0x101001c
     field public static final int privateImeOptions = 16843299; // 0x1010223
     field public static final int process = 16842769; // 0x1010011
diff --git a/core/res/res/color/text_color_primary.xml b/core/res/res/color/text_color_primary.xml
new file mode 100644
index 0000000000000..831a9c457e94e
--- /dev/null
+++ b/core/res/res/color/text_color_primary.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2017 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_enabled="false"
+        android:alpha="?attr/disabledAlpha"
+        android:color="?attr/colorForeground"/>
+    <item android:alpha="?attr/primaryContentAlpha"
+        android:color="?attr/colorForeground"/>
+</selector>
diff --git a/core/res/res/values/attrs.xml b/core/res/res/values/attrs.xml
index dd33718dfb2a1..8e9959f5664d5 100644
--- a/core/res/res/values/attrs.xml
+++ b/core/res/res/values/attrs.xml
@@ -62,6 +62,8 @@
 
         <!-- Default disabled alpha for widgets that set enabled/disabled alpha programmatically. -->
         <attr name="disabledAlpha" format="float" />
+        <!-- The alpha applied to the foreground color to create the primary text color. -->
+        <attr name="primaryContentAlpha" format="float" />
         <!-- Default background dim amount when a menu, dialog, or something similar pops up. -->
         <attr name="backgroundDimAmount" format="float" />
         <!-- Control whether dimming behind the window is enabled.  The default
diff --git a/core/res/res/values/colors_material.xml b/core/res/res/values/colors_material.xml
index 40e7341af3abc..835b8b60d2538 100644
--- a/core/res/res/values/colors_material.xml
+++ b/core/res/res/values/colors_material.xml
@@ -73,6 +73,8 @@
 
     <item name="disabled_alpha_material_light" format="float" type="dimen">0.26</item>
     <item name="disabled_alpha_material_dark" format="float" type="dimen">0.30</item>
+    <item name="primary_content_alpha_material_light" format="float" type="dimen">1</item>
+    <item name="primary_content_alpha_material_dark" format="float" type="dimen">0.87</item>
 
     <item name="highlight_alpha_material_light" format="float" type="dimen">0.12</item>
     <item name="highlight_alpha_material_dark" format="float" type="dimen">0.20</item>
diff --git a/core/res/res/values/public.xml b/core/res/res/values/public.xml
index 064d31e84cca7..099fe083e72f2 100644
--- a/core/res/res/values/public.xml
+++ b/core/res/res/values/public.xml
@@ -2793,6 +2793,8 @@
     <public-group type="id" first-id="0x01020041">
     </public-group>
 
+    <public type="attr" name="primaryContentAlpha" />
+
   <!-- ===============================================================
        DO NOT ADD UN-GROUPED ITEMS HERE
 
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index b923dff9064fa..0a757442d9691 100644
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -2797,4 +2797,5 @@
 
   <java-symbol type="raw" name="fallback_categories" />
 
+  <java-symbol type="attr" name="primaryContentAlpha" />
 </resources>
diff --git a/core/res/res/values/themes_material.xml b/core/res/res/values/themes_material.xml
index 5f0ad8ea625d1..d0f202ba76d09 100644
--- a/core/res/res/values/themes_material.xml
+++ b/core/res/res/values/themes_material.xml
@@ -48,13 +48,14 @@ please see themes_device_defaults.xml.
         <item name="colorBackgroundFloating">@color/background_floating_material_dark</item>
         <item name="colorBackgroundCacheHint">@color/background_cache_hint_selector_material_dark</item>
         <item name="disabledAlpha">@dimen/disabled_alpha_material_dark</item>
+        <item name="primaryContentAlpha">@dimen/primary_content_alpha_material_dark</item>
         <item name="backgroundDimAmount">0.6</item>
 
         <!-- Text styles -->
         <item name="textAppearance">@style/TextAppearance.Material</item>
         <item name="textAppearanceInverse">@style/TextAppearance.Material.Inverse</item>
 
-        <item name="textColorPrimary">@color/primary_text_material_dark</item>
+        <item name="textColorPrimary">@color/text_color_primary</item>
         <item name="textColorPrimaryInverse">@color/primary_text_material_light</item>
         <item name="textColorPrimaryActivated">@color/primary_text_inverse_when_activated_material</item>
         <item name="textColorPrimaryDisableOnly">@color/primary_text_disable_only_material_dark</item>
@@ -413,13 +414,14 @@ please see themes_device_defaults.xml.
         <item name="colorBackgroundFloating">@color/background_floating_material_light</item>
         <item name="colorBackgroundCacheHint">@color/background_cache_hint_selector_material_light</item>
         <item name="disabledAlpha">@dimen/disabled_alpha_material_light</item>
+        <item name="primaryContentAlpha">@dimen/primary_content_alpha_material_light</item>
         <item name="backgroundDimAmount">0.6</item>
 
         <!-- Text styles -->
         <item name="textAppearance">@style/TextAppearance.Material</item>
         <item name="textAppearanceInverse">@style/TextAppearance.Material.Inverse</item>
 
-        <item name="textColorPrimary">@color/primary_text_material_light</item>
+        <item name="textColorPrimary">@color/text_color_primary</item>
         <item name="textColorPrimaryInverse">@color/primary_text_material_dark</item>
         <item name="textColorPrimaryActivated">@color/primary_text_inverse_when_activated_material</item>
         <item name="textColorSecondary">@color/secondary_text_material_light</item>
@@ -805,7 +807,7 @@ please see themes_device_defaults.xml.
         <item name="colorBackgroundFloating">@color/background_floating_material_light</item>
         <item name="colorBackgroundCacheHint">@color/background_cache_hint_selector_material_light</item>
 
-        <item name="textColorPrimary">@color/primary_text_material_light</item>
+        <item name="textColorPrimary">@color/text_color_primary</item>
         <item name="textColorPrimaryInverse">@color/primary_text_material_dark</item>
         <item name="textColorSecondary">@color/secondary_text_material_light</item>
         <item name="textColorSecondaryInverse">@color/secondary_text_material_dark</item>
@@ -839,7 +841,7 @@ please see themes_device_defaults.xml.
         <item name="colorBackgroundFloating">@color/background_floating_material_dark</item>
         <item name="colorBackgroundCacheHint">@color/background_cache_hint_selector_material_dark</item>
 
-        <item name="textColorPrimary">@color/primary_text_material_dark</item>
+        <item name="textColorPrimary">@color/text_color_primary</item>
         <item name="textColorPrimaryInverse">@color/primary_text_material_light</item>
         <item name="textColorPrimaryDisableOnly">@color/primary_text_disable_only_material_dark</item>
         <item name="textColorSecondary">@color/secondary_text_material_dark</item>