diff --git a/boards/models/post/__init__.py b/boards/models/post/__init__.py
--- a/boards/models/post/__init__.py
+++ b/boards/models/post/__init__.py
@@ -443,5 +443,15 @@ class Post(models.Model, Viewable):
     def get_tripcode_color(self):
         return self.tripcode[:6]
 
+    def get_tripcode_background(self):
+        code = self.get_tripcode_color()
+        result = ''
+
+        for i in range(0, len(code), 2):
+            p = code[i:i+2]
+            result += hex(255 - int(p, 16))[2:]
+
+        return result
+
     def get_short_tripcode(self):
         return self.tripcode[:10]
\ No newline at end of file
diff --git a/boards/templates/boards/post.html b/boards/templates/boards/post.html
--- a/boards/templates/boards/post.html
+++ b/boards/templates/boards/post.html
@@ -9,7 +9,7 @@
         <span class="title">{{ post.title }}</span>
         <span class="pub_time"><time datetime="{{ post.pub_time|date:'c' }}">{{ post.pub_time }}</time></span>
         {% if post.tripcode %}
-            <span style="color: #{{post.get_tripcode_color}}">{{ post.get_short_tripcode }}</span>
+            <span style="color: #{{ post.get_tripcode_color }}; background: #{{ post.get_tripcode_background }}">{{ post.get_short_tripcode }}</span>
         {% endif %}
         {% comment %}
             Thread death time needs to be shown only if the thread is alredy archived