diff --git a/superset/assets/src/dashboard/stylesheets/components/markdown.less b/superset/assets/src/dashboard/stylesheets/components/markdown.less
index 87974d9ac6692..44deeea20d63e 100644
--- a/superset/assets/src/dashboard/stylesheets/components/markdown.less
+++ b/superset/assets/src/dashboard/stylesheets/components/markdown.less
@@ -1,6 +1,17 @@
 .dashboard-markdown {
   overflow: hidden;
 
+  h4, h5 {
+    font-weight: 300;
+  }
+  h5 {
+    color: @gray-heading;
+  }
+  h6 {
+    font-weight: 400;
+    font-size: 12px;
+  }
+
   .dashboard-component-chart-holder {
     overflow-y: auto;
     overflow-x: hidden;
diff --git a/superset/assets/src/dashboard/stylesheets/variables.less b/superset/assets/src/dashboard/stylesheets/variables.less
index 8f53f99a8a81a..c062c57928b60 100644
--- a/superset/assets/src/dashboard/stylesheets/variables.less
+++ b/superset/assets/src/dashboard/stylesheets/variables.less
@@ -5,6 +5,7 @@
 @gray: #879399;
 @gray-light: #CFD8DC;
 @gray-bg: #f5f5f5;
+@gray-heading: #A3A3A3;
 @menu-hover: #F2F3F5;
 
 /* builder component pane */