diff --git a/tildes/package.json b/tildes/package.json
index c3d98c0..87e7c6d 100644
--- a/tildes/package.json
+++ b/tildes/package.json
@@ -50,6 +50,7 @@
         }
       ],
       "block-no-empty": true,
+      "color-function-notation": "legacy",
       "color-named": "never",
       "color-no-invalid-hex": true,
       "comment-empty-line-before": "always",
diff --git a/tildes/scss/themes/_atom_one_dark.scss b/tildes/scss/themes/_atom_one_dark.scss
index 5e2ad13..93ffcc9 100644
--- a/tildes/scss/themes/_atom_one_dark.scss
+++ b/tildes/scss/themes/_atom_one_dark.scss
@@ -1,20 +1,19 @@
 // Colours from Atom One Dark Syntax
-// stylelint-disable-line max-line-length
 // https://github.com/atom/atom/blob/master/packages/one-dark-syntax/styles/colors.less
 
 // Base colors
-$background: hsl(220deg 13% 18%);
+$background: hsl(220deg, 13%, 18%);
 $background-alt: #21242b;
-$foreground: hsl(220deg 14% 71%);
-$foreground-alt: hsl(220deg 9% 55%);
+$foreground: hsl(220deg, 14%, 71%);
+$foreground-alt: hsl(220deg, 9%, 55%);
 
 // Accent colors
-$cyan: hsl(187deg 47% 55%);
-$blue: hsl(207deg 82% 66%);
-$purple: hsl(286deg 60% 67%);
-$green: hsl(95deg 38% 62%);
-$red: hsl(355deg 65% 65%);
-$orange: hsl(29deg 54% 61%);
+$cyan: hsl(187deg, 47%, 55%);
+$blue: hsl(207deg, 82%, 66%);
+$purple: hsl(286deg, 60%, 67%);
+$green: hsl(95deg, 38%, 62%);
+$red: hsl(355deg, 65%, 65%);
+$orange: hsl(29deg, 54%, 61%);
 
 // Actual theme definition
 $theme-atom-one-dark: (