1 files changed, 8 insertions, 4 deletions
diff --git a/src/scss/function/_contrast-color.scss b/src/scss/function/_contrast-color.scss
index 75f341c..3867958 100644
--- a/src/scss/function/_contrast-color.scss
+++ b/src/scss/function/_contrast-color.scss
@@ -1,9 +1,13 @@
+@charset "utf-8";
+
+// Built-In Modules
+@use 'sass:math';
+@use 'sass:color';
+
 // ===================================================================
 // contrast color
 // ===================================================================
 
-@charset "utf-8";
-
 @function contrast-color($color: null, $dark: #000, $light: #fff) {
 	@if $color == null {
 		@return null;
@@ -13,10 +17,10 @@
 		$light-color-brightness: brightness($light);
 		$dark-color-brightness: brightness($dark);
 
-		@return if(abs($color-brightness - $light-color-brightness) > abs($color-brightness - $dark-color-brightness), $light, $dark);
+		@return if(math.abs($color-brightness - $light-color-brightness) > math.abs($color-brightness - $dark-color-brightness), $light, $dark);
 	}
 }
 
 @function brightness($color: null) {
-	@return ((red($color) * 299) + (green($color) * 587) + (blue($color) * 114)) / 1000;
+	@return ((color.red($color) * 299) + (color.green($color) * 587) + (color.blue($color) * 114)) / 1000;
 }