diff --git a/app/src/main/res/values-night/color_palette.xml b/app/src/main/res/values-night/color_palette.xml
index 610b29c2ac1..36917970d4f 100644
--- a/app/src/main/res/values-night/color_palette.xml
+++ b/app/src/main/res/values-night/color_palette.xml
@@ -171,9 +171,9 @@
   <color name="color_palette_shared_card_border_stroke_color">@color/color_def_accessible_light_grey_2</color>
   <color name="color_palette_lesson_in_progress_chapter_index_background_color">@color/color_def_oppia_green</color>
   <color name="color_palette_lesson_in_progress_chapter_name_background_color">@color/color_def_accessible_grey</color>
-  <color name="color_palette_lessons_locked_chapter_container_background_color">@color/color_def_accessible_light_grey_2</color>
+  <color name="color_palette_lessons_locked_chapter_container_background_color">@color/color_def_accessible_light_grey</color>
   <color name="color_palette_lesson_locked_chapter_name_text_color">@color/color_def_white_80</color>
-  <color name="color_palette_lesson_locked_chapter_name_background_color">@color/color_def_accessible_light_grey_2</color>
+  <color name="color_palette_lesson_locked_chapter_name_background_color">@color/color_def_accessible_light_grey</color>
   <color name="color_palette_lessons_locked_vertical_divider_color">@color/color_def_dark_silver</color>
   <color name="color_palette_lesson_not_started_stroke_color">@color/color_def_white</color>
   <color name="color_palette_lesson_not_started_chapter_name_background_color">@color/color_def_oppia_green</color>
diff --git a/app/src/main/res/values/color_palette.xml b/app/src/main/res/values/color_palette.xml
index a542be65211..f5202bb9365 100644
--- a/app/src/main/res/values/color_palette.xml
+++ b/app/src/main/res/values/color_palette.xml
@@ -178,7 +178,7 @@
   <color name="color_palette_lesson_in_progress_chapter_name_background_color">@color/color_def_light_green</color>
   <color name="color_palette_lessons_locked_chapter_container_background_color">@color/color_def_accessible_light_grey_2</color>
   <color name="color_palette_lesson_locked_chapter_name_text_color">@color/color_def_accessible_light_grey_2</color>
-  <color name="color_palette_lesson_locked_chapter_name_background_color">@color/color_def_grey</color>
+  <color name="color_palette_lesson_locked_chapter_name_background_color">@color/color_def_oppia_grey_background</color>
   <color name="color_palette_lessons_locked_vertical_divider_color">@color/color_def_transparent</color>
   <color name="color_palette_lesson_not_started_stroke_color">@color/color_def_bright_green</color>
   <color name="color_palette_lesson_not_started_chapter_name_background_color">@color/color_def_white</color>