diff --git a/planet/static/js/cytoscape.cycss b/planet/static/js/cytoscape.cycss
index a0e53ba..bcf804a 100644
--- a/planet/static/js/cytoscape.cycss
+++ b/planet/static/js/cytoscape.cycss
@@ -134,7 +134,7 @@ edge.link_score {
 }
 
 edge.link_pcc {
-        line-color: mapData(link_pcc, 0.7, 1, blue, red);
+        line-color: mapData(link_pcc, 0.5, 1, blue, red);
 }
 
 edge.hrr {