diff --git a/site/filters.json b/site/filters.json
index de5138e..62b0b89 100644
--- a/site/filters.json
+++ b/site/filters.json
@@ -107,7 +107,7 @@
         },
         {
             "name": "Ludwig",
-            "is_done": false,
+            "is_done": true,
             "usage": "ludwig"
         },
         {
diff --git a/source/scss/cssgram.scss b/source/scss/cssgram.scss
index aee0b81..9d1637c 100644
--- a/source/scss/cssgram.scss
+++ b/source/scss/cssgram.scss
@@ -21,4 +21,5 @@
 @import 'rise';
 @import 'slumber';
 @import 'brannan';
-@import 'valencia';
\ No newline at end of file
+@import 'valencia';
+@import 'ludwig';
\ No newline at end of file
diff --git a/source/scss/ludwig.scss b/source/scss/ludwig.scss
new file mode 100644
index 0000000..de8a6f3
--- /dev/null
+++ b/source/scss/ludwig.scss
@@ -0,0 +1,36 @@
+/*
+  *
+  * Ludwig
+  *
+  */
+ @import 'shared';
+
+ // mixin to extend ludwig filter
+ // @mixin ludwig
+ // @param $filters... {filter} - Zero to many css filters to be added
+ // @example
+ //   img {
+ //     @include ludwig;
+ //   }
+ //   or
+ //   img {
+ //     @include ludwig(blur(2px));
+ //   }
+ //   or
+ //   img {
+ //     @include ludwig(blur(2px)) {
+ //       /*...*/
+ //     };
+ //   }
+ @mixin ludwig($filters...) {
+   @extend %filter-base;
+   filter: saturate(0.8) contrast(1.15) grayscale(0.25) $filters;
+
+   @content;
+ }
+
+ // ludwig Instagram filter
+ %ludwig,
+ .ludwig {
+   @include ludwig;
+ }
\ No newline at end of file