diff --git a/packages/react-navigation/src/views/CardStack/Card.js b/packages/react-navigation/src/views/CardStack/Card.js
index 429e252d..33080630 100644
--- a/packages/react-navigation/src/views/CardStack/Card.js
+++ b/packages/react-navigation/src/views/CardStack/Card.js
@@ -22,7 +22,7 @@ class Card extends React.Component {
 
 const styles = StyleSheet.create({
   main: {
-    backgroundColor: '#E9E9EF',
+    backgroundColor: '#EFEFF4',
     bottom: 0,
     left: 0,
     position: 'absolute',
diff --git a/packages/react-navigation/src/views/Header/Header.js b/packages/react-navigation/src/views/Header/Header.js
index 51855bee..1b246d3b 100644
--- a/packages/react-navigation/src/views/Header/Header.js
+++ b/packages/react-navigation/src/views/Header/Header.js
@@ -503,7 +503,7 @@ let platformContainerStyles;
 if (Platform.OS === 'ios') {
   platformContainerStyles = {
     borderBottomWidth: StyleSheet.hairlineWidth,
-    borderBottomColor: 'rgba(0, 0, 0, .3)',
+    borderBottomColor: '#A7A7AA',
   };
 } else {
   platformContainerStyles = {