feat: use upstream palette for icons

common/accent-colors.scss.in

@@ -4,28 +4,24 @@
     $color: null;
     @if $accent_color == 'default' {
         $color: #E95420;
-    } @else if $accent_color == 'bark' {
-        $color: #787859;
-    } @else if $accent_color == 'sage' {
-        $color: #657B69;
-    } @else if $accent_color == 'olive' {
-        $color: #4B8501;
-    } @else if $accent_color == 'viridian' {
-        $color: #03875B;
-    } @else if $accent_color == 'prussiangreen' {
-        $color: #308280;
-    } @else if $accent_color == 'blue' {
-        $color: #0073E5;
-    } @else if $accent_color == 'purple' {
-        $color: #7764D8;
-    } @else if $accent_color == 'magenta' {
-        $color: #B34CB3;
-    } @else if $accent_color == 'red' {
-        $color: #DA3450;
+    }
+
+    @else if $accent_color == 'blue' {
+        $color: #3584e4; // ADW_ACCENT_COLOR_BLUE
+    } @else if $accent_color == 'teal' {
+        $color: #2190a4; // ADW_ACCENT_COLOR_TEAL
+    } @else if $accent_color == 'green' {
+        $color: #3a944a; // ADW_ACCENT_COLOR_GREEN
     } @else if $accent_color == 'yellow' {
-        $color: #C88800;
-    } @else if $accent_color == 'wartybrown' {
-        $color: #B39169;
+        $color: #c88800; // ADW_ACCENT_COLOR_YELLOW
+    } @else if $accent_color == 'red' {
+        $color: #e62d42; // ADW_ACCENT_COLOR_RED
+    } @else if $accent_color == 'pink' {
+        $color: #d56199; // ADW_ACCENT_COLOR_PINK
+    } @else if $accent_color == 'purple' {
+        $color: #9141ac; // ADW_ACCENT_COLOR_PURPLE
+    } @else if $accent_color == 'slate' {
+        $color: #6f8396; // ADW_ACCENT_COLOR_SLATE
     } @else {
         @error('No known accent color defined!');
     }
@@ -38,9 +34,10 @@ $jet: #181818;
 $yaru_bg_color: if($yaru_is_dark_variant, #FAFAFA, lighten($jet, 8%));
 $yaru_accent_bg_color: get_accent_color('@yaru_accent_color@', $yaru_is_dark_variant);
 
-$contrast_target: if($yaru_is_dark_variant, 4.8, 4.51);
-$yaru_accent_color: optimize-contrast($yaru_bg_color,
-    $yaru_accent_bg_color, $target: $contrast_target);
+// Use Libadwaita approach with HSL approximation (GTK3 doesn't support oklab)
+// accent_bg_color: Raw hex for backgrounds (with white foreground)
+// accent_color: Lightness-adjusted for standalone use (links, icons)
+$yaru_accent_color: standalone-accent($yaru_accent_bg_color, $yaru_is_dark_variant);
 
 @debug("Accent color is " + $yaru_accent_bg_color);
 @debug("Contrast optimized accent is " + $yaru_accent_color);
@@ -49,8 +46,4 @@ $accent_bg_color: $yaru_accent_bg_color;
 $accent_fg_color: white;
 $accent_color: $yaru_accent_color;
 
-$yaru_accent_bg_color: optimize-contrast($accent_fg_color,
-    $yaru_accent_bg_color, $target: $contrast_target);
-$accent_bg_color: $yaru_accent_bg_color;
-
 @import '@yaru_theme_entry_point@'

common/sass-utils.scss

@@ -222,4 +222,21 @@
       round(green($fg) * $alpha + green($bg) * (1 - $alpha)),
       round(blue($fg) * $alpha + blue($bg) * (1 - $alpha))
     );
-  }
+}
+
+// Standalone accent color function (Libadwaita-style)
+// Adjusts color lightness for use on light or dark backgrounds
+// Approximates Oklab lightness thresholds using HSL
+@function standalone-accent($color, $dark: false) {
+    $L: lightness($color);
+
+    @if $dark {
+        // Dark mode: ensure minimum lightness of 85% (Oklab 0.85 ≈ HSL 85%)
+        $L: max($L, 85%);
+    } @else {
+        // Light mode: ensure maximum lightness of 50% (Oklab 0.5 ≈ HSL 50%)
+        $L: min($L, 50%);
+    }
+
+    @return hsl(hue($color), saturation($color), $L);
+}

debian/control

@@ -8,6 +8,8 @@ Build-Depends-Indep: libglib2.0-dev,
                      meson (>= 0.60),
                      libxml2-utils,
                      sassc,
+                     inkscape,
+                     optipng,
 Standards-Version: 4.6.2
 Rules-Requires-Root: no
 Homepage: https://community.ubuntu.com/c/desktop/theme-refresh

gnome-shell/src/gnome-shell-sass/_color-overrides.scss

@@ -0,0 +1,6 @@
+//
+// Color Overrides
+//
+// Override specific colors after all default colors are loaded
+
+$success_bg_color: #0e8420;

gnome-shell/src/gnome-shell-sass/_colors.scss

@@ -0,0 +1 @@
+../../upstream/theme/gnome-shell-sass/_colors.scss