Don't use color-mix(…) on currentColor

Author: philipp-spiess

CHANGELOG.md

@@ -21,6 +21,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Fix incorrect angle in `-bg-conic-*` utilities ([#17174](https://github.com/tailwindlabs/tailwindcss/pull/17174))
+- Ensure the default preflight styles don't crash Safari 16.4 and 16.5 when a placeholder is used.
 
 ## [4.0.14] - 2025-03-13
 

packages/tailwindcss/preflight.css

@@ -285,12 +285,12 @@ textarea,
 
 /*
   1. Reset the default placeholder opacity in Firefox. (https://github.com/tailwindlabs/tailwindcss/issues/3300)
-  2. Set the default placeholder color to a semi-transparent version of the current text color.
+  2. Set the default placeholder color to a semi-transparent version of the current text color. We use the `oklab(…)` function to work around an issue in Safari 16.4 and 16.5. (https://github.com/tailwindlabs/tailwindcss/issues/17194)
 */
 
 ::placeholder {
   opacity: 1; /* 1 */
-  color: color-mix(in oklab, currentColor 50%, transparent); /* 2 */
+  color: oklab(from currentColor l a b / 50%); /* 2 */
 }
 
 /*