diff --git a/.bundlewatch.config.json b/.bundlewatch.config.json
index 6f680664ca..80f3af45c0 100644
--- a/.bundlewatch.config.json
+++ b/.bundlewatch.config.json
@@ -14,7 +14,7 @@
     },
     {
       "path": "./dist/css/bootstrap-reboot.min.css",
-      "maxSize": "3.25 kB"
+      "maxSize": "3.5 kB"
     },
     {
       "path": "./dist/css/bootstrap-utilities.css",
@@ -22,15 +22,15 @@
     },
     {
       "path": "./dist/css/bootstrap-utilities.min.css",
-      "maxSize": "10.75 kB"
+      "maxSize": "11.0 kB"
     },
     {
       "path": "./dist/css/bootstrap.css",
-      "maxSize": "32.5 kB"
+      "maxSize": "32.75 kB"
     },
     {
       "path": "./dist/css/bootstrap.min.css",
-      "maxSize": "30.25 kB"
+      "maxSize": "30.5 kB"
     },
     {
       "path": "./dist/js/bootstrap.bundle.js",
diff --git a/.github/workflows/node-sass.yml b/.github/workflows/node-sass.yml
deleted file mode 100644
index 493cc35fde..0000000000
--- a/.github/workflows/node-sass.yml
+++ /dev/null
@@ -1,49 +0,0 @@
-name: CSS (node-sass)
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-  workflow_dispatch:
-
-env:
-  FORCE_COLOR: 2
-  NODE: 20
-
-permissions:
-  contents: read
-
-jobs:
-  css:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Clone repository
-        uses: actions/checkout@v4
-        with:
-          persist-credentials: false
-
-      - name: Set up Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: "${{ env.NODE }}"
-
-      - name: Build CSS with node-sass
-        run: |
-          npx --package node-sass@latest node-sass --version
-          npx --package node-sass@latest node-sass --output-style expanded --source-map true --source-map-contents true --precision 6 scss/ -o dist-sass/css/
-          ls -Al dist-sass/css
-
-      - name: Check built CSS files for Sass variables
-        shell: bash
-        run: |
-          SASS_VARS_FOUND=$(find "dist-sass/css/" -type f -name "*.css" -print0 | xargs -0 --no-run-if-empty grep -F "\$" || true)
-          if [[ -z "$SASS_VARS_FOUND" ]]; then
-            echo "All good, no Sass variables found!"
-            exit 0
-          else
-            echo "Found $(echo "$SASS_VARS_FOUND" | wc -l | bc) Sass variables:"
-            echo "$SASS_VARS_FOUND"
-            exit 1
-          fi
diff --git a/package-lock.json b/package-lock.json
index d840cf06a1..bebb0106a5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -84,7 +84,7 @@
         "rollup": "^4.38.0",
         "rollup-plugin-istanbul": "^5.0.0",
         "rtlcss": "^4.3.0",
-        "sass": "1.78.0",
+        "sass": "1.79",
         "sass-true": "^8.1.0",
         "shelljs": "^0.9.2",
         "stylelint": "^16.17.0",
@@ -3588,6 +3588,328 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@parcel/watcher": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/@parcel/watcher/-/watcher-2.5.1.tgz",
+      "integrity": "sha512-dfUnCxiN9H4ap84DvD2ubjw+3vUNpstxa0TneY/Paat8a3R4uQZDLSvWjmznAY/DoahqTHl9V46HF/Zs3F29pg==",
+      "dev": true,
+      "hasInstallScript": true,
+      "license": "MIT",
+      "dependencies": {
+        "detect-libc": "^1.0.3",
+        "is-glob": "^4.0.3",
+        "micromatch": "^4.0.5",
+        "node-addon-api": "^7.0.0"
+      },
+      "engines": {
+        "node": ">= 10.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      },
+      "optionalDependencies": {
+        "@parcel/watcher-android-arm64": "2.5.1",
+        "@parcel/watcher-darwin-arm64": "2.5.1",
+        "@parcel/watcher-darwin-x64": "2.5.1",
+        "@parcel/watcher-freebsd-x64": "2.5.1",
+        "@parcel/watcher-linux-arm-glibc": "2.5.1",
+        "@parcel/watcher-linux-arm-musl": "2.5.1",
+        "@parcel/watcher-linux-arm64-glibc": "2.5.1",
+        "@parcel/watcher-linux-arm64-musl": "2.5.1",
+        "@parcel/watcher-linux-x64-glibc": "2.5.1",
+        "@parcel/watcher-linux-x64-musl": "2.5.1",
+        "@parcel/watcher-win32-arm64": "2.5.1",
+        "@parcel/watcher-win32-ia32": "2.5.1",
+        "@parcel/watcher-win32-x64": "2.5.1"
+      }
+    },
+    "node_modules/@parcel/watcher-android-arm64": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/@parcel/watcher-android-arm64/-/watcher-android-arm64-2.5.1.tgz",
+      "integrity": "sha512-KF8+j9nNbUN8vzOFDpRMsaKBHZ/mcjEjMToVMJOhTozkDonQFFrRcfdLWn6yWKCmJKmdVxSgHiYvTCef4/qcBA==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">= 10.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/@parcel/watcher-darwin-arm64": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/@parcel/watcher-darwin-arm64/-/watcher-darwin-arm64-2.5.1.tgz",
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+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": ">= 10.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/@parcel/watcher-darwin-x64": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/@parcel/watcher-darwin-x64/-/watcher-darwin-x64-2.5.1.tgz",
+      "integrity": "sha512-1ZXDthrnNmwv10A0/3AJNZ9JGlzrF82i3gNQcWOzd7nJ8aj+ILyW1MTxVk35Db0u91oD5Nlk9MBiujMlwmeXZg==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": ">= 10.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/@parcel/watcher-freebsd-x64": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/@parcel/watcher-freebsd-x64/-/watcher-freebsd-x64-2.5.1.tgz",
+      "integrity": "sha512-SI4eljM7Flp9yPuKi8W0ird8TI/JK6CSxju3NojVI6BjHsTyK7zxA9urjVjEKJ5MBYC+bLmMcbAWlZ+rFkLpJQ==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "freebsd"
+      ],
+      "engines": {
+        "node": ">= 10.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/@parcel/watcher-linux-arm-glibc": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/@parcel/watcher-linux-arm-glibc/-/watcher-linux-arm-glibc-2.5.1.tgz",
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+      "cpu": [
+        "arm"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 10.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/@parcel/watcher-linux-arm-musl": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/@parcel/watcher-linux-arm-musl/-/watcher-linux-arm-musl-2.5.1.tgz",
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+      "cpu": [
+        "arm"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 10.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/@parcel/watcher-linux-arm64-glibc": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/@parcel/watcher-linux-arm64-glibc/-/watcher-linux-arm64-glibc-2.5.1.tgz",
+      "integrity": "sha512-LrGp+f02yU3BN9A+DGuY3v3bmnFUggAITBGriZHUREfNEzZh/GO06FF5u2kx8x+GBEUYfyTGamol4j3m9ANe8w==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 10.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/@parcel/watcher-linux-arm64-musl": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/@parcel/watcher-linux-arm64-musl/-/watcher-linux-arm64-musl-2.5.1.tgz",
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+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 10.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/@parcel/watcher-linux-x64-glibc": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/@parcel/watcher-linux-x64-glibc/-/watcher-linux-x64-glibc-2.5.1.tgz",
+      "integrity": "sha512-GcESn8NZySmfwlTsIur+49yDqSny2IhPeZfXunQi48DMugKeZ7uy1FX83pO0X22sHntJ4Ub+9k34XQCX+oHt2A==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 10.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/@parcel/watcher-linux-x64-musl": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/@parcel/watcher-linux-x64-musl/-/watcher-linux-x64-musl-2.5.1.tgz",
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+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">= 10.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/@parcel/watcher-win32-arm64": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/@parcel/watcher-win32-arm64/-/watcher-win32-arm64-2.5.1.tgz",
+      "integrity": "sha512-RFzklRvmc3PkjKjry3hLF9wD7ppR4AKcWNzH7kXR7GUe0Igb3Nz8fyPwtZCSquGrhU5HhUNDr/mKBqj7tqA2Vw==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "engines": {
+        "node": ">= 10.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/@parcel/watcher-win32-ia32": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/@parcel/watcher-win32-ia32/-/watcher-win32-ia32-2.5.1.tgz",
+      "integrity": "sha512-c2KkcVN+NJmuA7CGlaGD1qJh1cLfDnQsHjE89E60vUEMlqduHGCdCLJCID5geFVM0dOtA3ZiIO8BoEQmzQVfpQ==",
+      "cpu": [
+        "ia32"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "engines": {
+        "node": ">= 10.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/@parcel/watcher-win32-x64": {
+      "version": "2.5.1",
+      "resolved": "https://registry.npmjs.org/@parcel/watcher-win32-x64/-/watcher-win32-x64-2.5.1.tgz",
+      "integrity": "sha512-9lHBdJITeNR++EvSQVUcaZoWupyHfXe1jZvGZ06O/5MflPcuPLtEphScIBL+AiCWBO46tDSHzWyD0uDmmZqsgA==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "engines": {
+        "node": ">= 10.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/parcel"
+      }
+    },
+    "node_modules/@parcel/watcher/node_modules/detect-libc": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-1.0.3.tgz",
+      "integrity": "sha512-pGjwhsmsp4kL2RTz08wcOlGN83otlqHeD/Z5T8GXZB+/YcpQ/dgo+lbU8ZsGxV0HIvqqxo9l7mqYwyYMD9bKDg==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "detect-libc": "bin/detect-libc.js"
+      },
+      "engines": {
+        "node": ">=0.10"
+      }
+    },
     "node_modules/@pkgjs/parseargs": {
       "version": "0.11.0",
       "resolved": "https://registry.npmjs.org/@pkgjs/parseargs/-/parseargs-0.11.0.tgz",
@@ -13490,6 +13812,13 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/node-addon-api": {
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-7.1.1.tgz",
+      "integrity": "sha512-5m3bsyrjFWE1xf7nz7YXdN4udnVtXK6/Yfgn5qnahL6bCkf2yKt4k3nuTKAtT4r3IG8JNR2ncsIMdZuAzJjHQQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/node-fetch": {
       "version": "2.7.0",
       "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.7.0.tgz",
@@ -16098,13 +16427,14 @@
       "license": "MIT"
     },
     "node_modules/sass": {
-      "version": "1.78.0",
-      "resolved": "https://registry.npmjs.org/sass/-/sass-1.78.0.tgz",
-      "integrity": "sha512-AaIqGSrjo5lA2Yg7RvFZrlXDBCp3nV4XP73GrLGvdRWWwk+8H3l0SDvq/5bA4eF+0RFPLuWUk3E+P1U/YqnpsQ==",
+      "version": "1.79.6",
+      "resolved": "https://registry.npmjs.org/sass/-/sass-1.79.6.tgz",
+      "integrity": "sha512-PVVjeeiUGx6Nj4PtEE/ecwu8ltwfPKzHxbbVmmLj4l1FYHhOyfA0scuVF8sVaa+b+VY4z7BVKjKq0cPUQdUU3g==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "chokidar": ">=3.0.0 <4.0.0",
+        "@parcel/watcher": "^2.4.1",
+        "chokidar": "^4.0.0",
         "immutable": "^4.0.0",
         "source-map-js": ">=0.6.2 <2.0.0"
       },
@@ -16152,70 +16482,6 @@
         }
       }
     },
-    "node_modules/sass/node_modules/chokidar": {
-      "version": "3.6.0",
-      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.6.0.tgz",
-      "integrity": "sha512-7VT13fmjotKpGipCW9JEQAusEPE+Ei8nl6/g4FBAmIm0GOOLMua9NDDo/DWp0ZAxCr3cPq5ZpBqmPAQgDda2Pw==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "anymatch": "~3.1.2",
-        "braces": "~3.0.2",
-        "glob-parent": "~5.1.2",
-        "is-binary-path": "~2.1.0",
-        "is-glob": "~4.0.1",
-        "normalize-path": "~3.0.0",
-        "readdirp": "~3.6.0"
-      },
-      "engines": {
-        "node": ">= 8.10.0"
-      },
-      "funding": {
-        "url": "https://paulmillr.com/funding/"
-      },
-      "optionalDependencies": {
-        "fsevents": "~2.3.2"
-      }
-    },
-    "node_modules/sass/node_modules/glob-parent": {
-      "version": "5.1.2",
-      "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-5.1.2.tgz",
-      "integrity": "sha512-AOIgSQCepiJYwP3ARnGx+5VnTu2HBYdzbGP45eLw1vr3zB3vZLeyed1sC9hnbcOc9/SrMyM5RPQrkGz4aS9Zow==",
-      "dev": true,
-      "license": "ISC",
-      "dependencies": {
-        "is-glob": "^4.0.1"
-      },
-      "engines": {
-        "node": ">= 6"
-      }
-    },
-    "node_modules/sass/node_modules/picomatch": {
-      "version": "2.3.1",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.1.tgz",
-      "integrity": "sha512-JU3teHTNjmE2VCGFzuY8EXzCDVwEqB2a8fsIvwaStHhAWJEeVd1o1QD80CU6+ZdEXXSLbSsuLwJjkCBWqRQUVA==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=8.6"
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-      "funding": {
-        "url": "https://github.com/sponsors/jonschlinkert"
-      }
-    },
-    "node_modules/sass/node_modules/readdirp": {
-      "version": "3.6.0",
-      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.6.0.tgz",
-      "integrity": "sha512-hOS089on8RduqdbhvQ5Z37A0ESjsqz6qnRcffsMU3495FuTdqSm+7bhJ29JvIOsBDEEnan5DPu9t3To9VRlMzA==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "picomatch": "^2.2.1"
-      },
-      "engines": {
-        "node": ">=8.10.0"
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     "node_modules/sax": {
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/sax/-/sax-1.4.1.tgz",
diff --git a/package.json b/package.json
index 05aa80aed4..8d7c9bec3d 100644
--- a/package.json
+++ b/package.json
@@ -173,7 +173,7 @@
     "rollup": "^4.38.0",
     "rollup-plugin-istanbul": "^5.0.0",
     "rtlcss": "^4.3.0",
-    "sass": "1.78.0",
+    "sass": "1.79",
     "sass-true": "^8.1.0",
     "shelljs": "^0.9.2",
     "stylelint": "^16.17.0",
diff --git a/scss/_functions.scss b/scss/_functions.scss
index e04b5c61b3..eda2f2f04b 100644
--- a/scss/_functions.scss
+++ b/scss/_functions.scss
@@ -1,3 +1,6 @@
+@use "sass:color";
+@use "sass:math";
+
 // Bootstrap functions
 //
 // Utility mixins and functions for evaluating source code across our variables, maps, and mixins.
@@ -34,7 +37,7 @@
 
 // Colors
 @function to-rgb($value) {
-  @return red($value), green($value), blue($value);
+  @return math.round(color.channel($value, "red", $space: rgb)), math.round(color.channel($value, "green", $space: rgb)), math.round(color.channel($value, "blue", $space: rgb));
 }
 
 // stylelint-disable scss/dollar-variable-pattern
@@ -182,9 +185,9 @@ $_luminance-list: .0008 .001 .0011 .0013 .0015 .0017 .002 .0022 .0025 .0027 .003
 // See https://www.w3.org/TR/WCAG/#dfn-contrast-ratio
 @function luminance($color) {
   $rgb: (
-    "r": red($color),
-    "g": green($color),
-    "b": blue($color)
+    "r": math.round(color.channel($color, "red", $space: rgb)), // stylelint-disable-line scss/at-function-named-arguments
+    "g": math.round(color.channel($color, "green", $space: rgb)), // stylelint-disable-line scss/at-function-named-arguments
+    "b": math.round(color.channel($color, "blue", $space: rgb)) // stylelint-disable-line scss/at-function-named-arguments
   );
 
   @each $name, $value in $rgb {
diff --git a/scss/helpers/_color-bg.scss b/scss/helpers/_color-bg.scss
index 1a3a4cffd6..fa02a9f3b7 100644
--- a/scss/helpers/_color-bg.scss
+++ b/scss/helpers/_color-bg.scss
@@ -1,7 +1,6 @@
-// All-caps `RGBA()` function used because of this Sass bug: https://github.com/sass/node-sass/issues/2251
 @each $color, $value in $theme-colors {
   .text-bg-#{$color} {
     color: color-contrast($value) if($enable-important-utilities, !important, null);
-    background-color: RGBA(var(--#{$prefix}#{$color}-rgb), var(--#{$prefix}bg-opacity, 1)) if($enable-important-utilities, !important, null);
+    background-color: rgba(var(--#{$prefix}#{$color}-rgb), var(--#{$prefix}bg-opacity, 1)) if($enable-important-utilities, !important, null);
   }
 }
diff --git a/scss/helpers/_colored-links.scss b/scss/helpers/_colored-links.scss
index 5f86857800..7685c52855 100644
--- a/scss/helpers/_colored-links.scss
+++ b/scss/helpers/_colored-links.scss
@@ -1,15 +1,14 @@
-// All-caps `RGBA()` function used because of this Sass bug: https://github.com/sass/node-sass/issues/2251
 @each $color, $value in $theme-colors {
   .link-#{$color} {
-    color: RGBA(var(--#{$prefix}#{$color}-rgb), var(--#{$prefix}link-opacity, 1)) if($enable-important-utilities, !important, null);
-    text-decoration-color: RGBA(var(--#{$prefix}#{$color}-rgb), var(--#{$prefix}link-underline-opacity, 1)) if($enable-important-utilities, !important, null);
+    color: rgba(var(--#{$prefix}#{$color}-rgb), var(--#{$prefix}link-opacity, 1)) if($enable-important-utilities, !important, null);
+    text-decoration-color: rgba(var(--#{$prefix}#{$color}-rgb), var(--#{$prefix}link-underline-opacity, 1)) if($enable-important-utilities, !important, null);
 
     @if $link-shade-percentage != 0 {
       &:hover,
       &:focus {
         $hover-color: if(color-contrast($value) == $color-contrast-light, shade-color($value, $link-shade-percentage), tint-color($value, $link-shade-percentage));
-        color: RGBA(#{to-rgb($hover-color)}, var(--#{$prefix}link-opacity, 1)) if($enable-important-utilities, !important, null);
-        text-decoration-color: RGBA(to-rgb($hover-color), var(--#{$prefix}link-underline-opacity, 1)) if($enable-important-utilities, !important, null);
+        color: rgba(#{to-rgb($hover-color)}, var(--#{$prefix}link-opacity, 1)) if($enable-important-utilities, !important, null);
+        text-decoration-color: rgba(to-rgb($hover-color), var(--#{$prefix}link-underline-opacity, 1)) if($enable-important-utilities, !important, null);
       }
     }
   }
@@ -17,14 +16,14 @@
 
 // One-off special link helper as a bridge until v6
 .link-body-emphasis {
-  color: RGBA(var(--#{$prefix}emphasis-color-rgb), var(--#{$prefix}link-opacity, 1)) if($enable-important-utilities, !important, null);
-  text-decoration-color: RGBA(var(--#{$prefix}emphasis-color-rgb), var(--#{$prefix}link-underline-opacity, 1)) if($enable-important-utilities, !important, null);
+  color: rgba(var(--#{$prefix}emphasis-color-rgb), var(--#{$prefix}link-opacity, 1)) if($enable-important-utilities, !important, null);
+  text-decoration-color: rgba(var(--#{$prefix}emphasis-color-rgb), var(--#{$prefix}link-underline-opacity, 1)) if($enable-important-utilities, !important, null);
 
   @if $link-shade-percentage != 0 {
     &:hover,
     &:focus {
-      color: RGBA(var(--#{$prefix}emphasis-color-rgb), var(--#{$prefix}link-opacity, .75)) if($enable-important-utilities, !important, null);
-      text-decoration-color: RGBA(var(--#{$prefix}emphasis-color-rgb), var(--#{$prefix}link-underline-opacity, .75)) if($enable-important-utilities, !important, null);
+      color: rgba(var(--#{$prefix}emphasis-color-rgb), var(--#{$prefix}link-opacity, .75)) if($enable-important-utilities, !important, null);
+      text-decoration-color: rgba(var(--#{$prefix}emphasis-color-rgb), var(--#{$prefix}link-underline-opacity, .75)) if($enable-important-utilities, !important, null);
     }
   }
 }
diff --git a/scss/tests/mixins/_color-modes.test.scss b/scss/tests/mixins/_color-modes.test.scss
index 9ecc628dea..bd845f47f9 100644
--- a/scss/tests/mixins/_color-modes.test.scss
+++ b/scss/tests/mixins/_color-modes.test.scss
@@ -17,7 +17,7 @@
           }
         }
         @include color-mode(dark, true) {
-          --custom-color: #{mix($indigo, $blue, 50%)};
+          --custom-color: #{$indigo};
         }
       }
       @include expect() {
@@ -26,7 +26,7 @@
           background-color: var(--bs-primary-bg-subtle);
         }
         [data-bs-theme=dark] {
-          --custom-color: #3a3ff8;
+          --custom-color: #6610f2;
         }
       }
     }
@@ -46,7 +46,7 @@
           }
         }
         @include color-mode(dark, true) {
-          --custom-color: #{mix($indigo, $blue, 50%)};
+          --custom-color: #{$indigo};
         }
       }
       @include expect() {
@@ -58,7 +58,7 @@
         }
         @media (prefers-color-scheme: dark) {
           :root {
-            --custom-color: #3a3ff8;
+            --custom-color: #6610f2;
           }
         }
       }
diff --git a/scss/tests/sass-true/runner.js b/scss/tests/sass-true/runner.js
index bef870ac6b..edf9ac4304 100644
--- a/scss/tests/sass-true/runner.js
+++ b/scss/tests/sass-true/runner.js
@@ -6,7 +6,7 @@ const { runSass } = require('sass-true')
 
 module.exports = (filename, { describe, it }) => {
   const data = fs.readFileSync(filename, 'utf8')
-  const TRUE_SETUP = '$true-terminal-output: false; @import "true";'
+  const TRUE_SETUP = '$true-terminal-output: false; @use "true" as *;'
   const sassString = TRUE_SETUP + data
 
   runSass(