From 37e594254d721a699641f5b2145daab8e5085290 Mon Sep 17 00:00:00 2001
From: Bill Criswell <bill.criswell@gmail.com>
Date: Sun, 10 Aug 2025 16:10:50 -0400
Subject: [PATCH 1/2] Add --border-color to divide theme keys

---
 packages/tailwindcss/src/utilities.test.ts | 7 +++++++
 packages/tailwindcss/src/utilities.ts      | 2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/packages/tailwindcss/src/utilities.test.ts b/packages/tailwindcss/src/utilities.test.ts
index 79934c8c044d..4feac35b762b 100644
--- a/packages/tailwindcss/src/utilities.test.ts
+++ b/packages/tailwindcss/src/utilities.test.ts
@@ -8843,6 +8843,7 @@ test('divide-color', async () => {
       css`
         @theme {
           --color-red-500: #ef4444;
+          --border-color-best-blue: #6495ED;
         }
         @tailwind utilities;
       `,
@@ -8854,6 +8855,7 @@ test('divide-color', async () => {
         'divide-red-500/2.75',
         'divide-red-500/[0.5]',
         'divide-red-500/[50%]',
+        'divide-best-blue',
         'divide-current',
         'divide-current/50',
         'divide-current/[0.5]',
@@ -8869,6 +8871,7 @@ test('divide-color', async () => {
   ).toMatchInlineSnapshot(`
     ":root, :host {
       --color-red-500: #ef4444;
+      --border-color-best-blue: #6495ed;
     }
 
     :where(.divide-\\[\\#0088cc\\] > :not(:last-child)) {
@@ -8879,6 +8882,10 @@ test('divide-color', async () => {
       border-color: oklab(59.9824% -.067 -.124 / .5);
     }
 
+    :where(.divide-best-blue > :not(:last-child)) {
+      border-color: var(--border-color-best-blue);
+    }
+
     :where(.divide-current > :not(:last-child)), :where(.divide-current\\/50 > :not(:last-child)) {
       border-color: currentColor;
     }
diff --git a/packages/tailwindcss/src/utilities.ts b/packages/tailwindcss/src/utilities.ts
index 13657f7eb3a7..52088e242f13 100644
--- a/packages/tailwindcss/src/utilities.ts
+++ b/packages/tailwindcss/src/utilities.ts
@@ -2007,7 +2007,7 @@ export function createUtilities(theme: Theme) {
   })
 
   colorUtility('divide', {
-    themeKeys: ['--divide-color', '--color'],
+    themeKeys: ['--divide-color', '--border-color', '--color'],
     handle: (value) => [
       styleRule(':where(& > :not(:last-child))', [
         decl('--tw-sort', 'divide-color'),

From 968b6de9beffafca76754f17c79c5b414e78090b Mon Sep 17 00:00:00 2001
From: Bill Criswell <bill.criswell@gmail.com>
Date: Sun, 10 Aug 2025 16:19:19 -0400
Subject: [PATCH 2/2] Changelog update

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3971ac3ee235..c1069b2b9324 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Improve error messages when encountering invalid functional utility names ([#18568](https://github.com/tailwindlabs/tailwindcss/pull/18568))
 - Don’t output CSS objects with false or undefined in the AST ([#18571](https://github.com/tailwindlabs/tailwindcss/pull/18571))
 - Add option to disable url rewriting in `@tailwindcss/postcss` ([#18321](https://github.com/tailwindlabs/tailwindcss/pull/18321))
+- Add `--border-color` to `divide` theme keys. ([#18704](https://github.com/tailwindlabs/tailwindcss/pull/18704/))
 
 ## [4.1.11] - 2025-06-26