diff --git a/plugins/statistics.koplugin/calendarview.lua b/plugins/statistics.koplugin/calendarview.lua
index ca8733edb..b1b9301bc 100644
--- a/plugins/statistics.koplugin/calendarview.lua
+++ b/plugins/statistics.koplugin/calendarview.lua
@@ -248,12 +248,12 @@ end
 local SPAN_COLORS = {
     { Blitbuffer.COLOR_BLACK, Blitbuffer.COLOR_WHITE },
     { Blitbuffer.COLOR_BLACK, Blitbuffer.COLOR_GRAY_E },
-    { Blitbuffer.COLOR_BLACK, Blitbuffer.COLOR_LIGHT_GRAY },
-    { Blitbuffer.COLOR_BLACK, Blitbuffer.COLOR_GRAY },
+    { Blitbuffer.COLOR_BLACK, Blitbuffer.COLOR_GRAY_D },
+    { Blitbuffer.COLOR_BLACK, Blitbuffer.COLOR_GRAY_B },
     { Blitbuffer.COLOR_WHITE, Blitbuffer.COLOR_GRAY_9 },
-    { Blitbuffer.COLOR_WHITE, Blitbuffer.COLOR_DARK_GRAY },
+    { Blitbuffer.COLOR_WHITE, Blitbuffer.COLOR_GRAY_7 },
     { Blitbuffer.COLOR_WHITE, Blitbuffer.COLOR_GRAY_5 },
-    { Blitbuffer.COLOR_WHITE, Blitbuffer.COLOR_BLACK },
+    { Blitbuffer.COLOR_WHITE, Blitbuffer.COLOR_GRAY_3 },
 }
 
 function CalendarWeek:update()