Tailwind CSS Releases

Latest: v4.3.3 · 16 Jul 2026 - Fixed Support --watch --poll[=ms] in @tailwindcss/cli when filesystem events are unreliable or unavailable ( #20297 ) Canonicalization: match arbitrary hex colors against theme colors case-insensitively (e.g. bg-[#fff] and bg-[#FFF] → bg-white ) ( #20298 ) Prevent Preflight from overriding Firefox's native iframe:focus-visible outline styles ( #20292 ) Ensure theme('colors.foo') in JS plugins resolves correctly when both --color-foo and --color-foo-bar exist ( #20299 ) Ensure fractional opacity modifiers work with named shadow sizes like shadow-sm/12.5 , text-shadow-sm/12.5 , drop-shadow-sm/12.5 , and inset-shadow-sm/12.5 ( #20302 ) Parse selectors like [data-foo]div as two selectors instead of one ( #20303 ) Ensure @tailwindcss/postcss rebuilds when a preprocessor like Sass changes the input CSS without changing the input file on disk ( #20310 ) Ensure CSS nesting is handled even when Lightning CSS isn't run, such as in @tailwindcss/browser and Tailwind Play ( #20124 ) Prevent achromatic theme colors from shifting hue when mixed in polar color spaces like oklch ( #20314 ) Ensure --spacing(0) is optimized to 0px instead of 0 so it remains a <length> when used in calc(…) ( #20319 ) Load @parcel/watcher only when needed in @tailwindcss/cli --watch mode, so one-off builds and --watch --poll work when @parcel/watcher can't be loaded ( #20325 ) Use explicit platform fonts instead of system-ui and ui-sans-serif so CJK text respects the page's lang attribute on Windows ( #20318 ) Prevent @tailwindcss/upgrade from rewriting ignored files when run from a subdirectory ( #20329 ) Ensure earlier @source rules pointing to nested files are scanned when later @source rules point to files in parent folders ( #20335 ) Prevent @tailwindcss/vite from triggering full page reloads when scanned files are processed by Vite but haven't been loaded as modules yet ( #20336 )