diff --git a/color-module/src/schemes/material_design_3/surface.rs b/color-module/src/schemes/material_design_3/surface.rs
index ad62315..972687c 100644
--- a/color-module/src/schemes/material_design_3/surface.rs
+++ b/color-module/src/schemes/material_design_3/surface.rs
@@ -84,43 +84,43 @@ impl M3SurfaceSet {
     pub fn to_css_variables(&self, prefix: &str) -> Vec<String> {
         let mut css_variables = Vec::new();
 
-        css_variables.push(format!("--color-{}-surface: ${};", prefix, self.root));
-        css_variables.push(format!("--color-{}-surface-dim: ${};", prefix, self.dim));
+        css_variables.push(format!("--color-{}-surface: #{};", prefix, self.root));
+        css_variables.push(format!("--color-{}-surface-dim: #{};", prefix, self.dim));
         css_variables.push(format!(
-            "--color-{}-surface-bright: ${};",
+            "--color-{}-surface-bright: #{};",
             prefix, self.bright
         ));
         css_variables.push(format!(
-            "--color-{}-surface-container: ${};",
+            "--color-{}-surface-container: #{};",
             prefix, self.container
         ));
         css_variables.push(format!(
-            "--color-{}-surface-container-lowest: ${};",
+            "--color-{}-surface-container-lowest: #{};",
             prefix, self.container_lowest
         ));
         css_variables.push(format!(
-            "--color-{}-surface-container-low: ${};",
+            "--color-{}-surface-container-low: #{};",
             prefix, self.container_low
         ));
         css_variables.push(format!(
-            "--color-{}-surface-container-high: ${};",
+            "--color-{}-surface-container-high: #{};",
             prefix, self.container_high
         ));
         css_variables.push(format!(
-            "--color-{}-surface-container-highest: ${};",
+            "--color-{}-surface-container-highest: #{};",
             prefix, self.container_highest
         ));
-        css_variables.push(format!("--color-{}-on-surface: ${};", prefix, self.on_root));
+        css_variables.push(format!("--color-{}-on-surface: #{};", prefix, self.on_root));
         css_variables.push(format!(
-            "--color-{}-on-surface-variant: ${};",
+            "--color-{}-on-surface-variant: #{};",
             prefix, self.on_root_variant
         ));
         css_variables.push(format!(
-            "--color-{}-inverse-surface: ${};",
+            "--color-{}-inverse-surface: #{};",
             prefix, self.inverse
         ));
         css_variables.push(format!(
-            "--color-{}-inverse-on-surface: ${};",
+            "--color-{}-inverse-on-surface: #{};",
             prefix, self.on_inverse
         ));
 
@@ -130,43 +130,43 @@ impl M3SurfaceSet {
     pub fn to_scss_variables(&self, prefix: &str) -> Vec<String> {
         let mut scss_variables = Vec::new();
 
-        scss_variables.push(format!("$color-{}-surface: ${};", prefix, self.root));
-        scss_variables.push(format!("$color-{}-surface-dim: ${};", prefix, self.dim));
+        scss_variables.push(format!("$color-{}-surface: #{};", prefix, self.root));
+        scss_variables.push(format!("$color-{}-surface-dim: #{};", prefix, self.dim));
         scss_variables.push(format!(
-            "$color-{}-surface-bright: ${};",
+            "$color-{}-surface-bright: #{};",
             prefix, self.bright
         ));
         scss_variables.push(format!(
-            "$color-{}-surface-container: ${};",
+            "$color-{}-surface-container: #{};",
             prefix, self.container
         ));
         scss_variables.push(format!(
-            "$color-{}-surface-container-lowest: ${};",
+            "$color-{}-surface-container-lowest: #{};",
             prefix, self.container_lowest
         ));
         scss_variables.push(format!(
-            "$color-{}-surface-container-low: ${};",
+            "$color-{}-surface-container-low: #{};",
             prefix, self.container_low
         ));
         scss_variables.push(format!(
-            "$color-{}-surface-container-high: ${};",
+            "$color-{}-surface-container-high: #{};",
             prefix, self.container_high
         ));
         scss_variables.push(format!(
-            "$color-{}-surface-container-highest: ${};",
+            "$color-{}-surface-container-highest: #{};",
             prefix, self.container_highest
         ));
-        scss_variables.push(format!("$color-{}-on-surface: ${};", prefix, self.on_root));
+        scss_variables.push(format!("$color-{}-on-surface: #{};", prefix, self.on_root));
         scss_variables.push(format!(
-            "$color-{}-on-surface-variant: ${};",
+            "$color-{}-on-surface-variant: #{};",
             prefix, self.on_root_variant
         ));
         scss_variables.push(format!(
-            "$color-{}-inverse-surface: ${};",
+            "$color-{}-inverse-surface: #{};",
             prefix, self.inverse
         ));
         scss_variables.push(format!(
-            "$color-{}-inverse-on-surface: ${};",
+            "$color-{}-inverse-on-surface: #{};",
             prefix, self.on_inverse
         ));