How to render inline svg element with TailwindCSS

I’ve defined a background image in tailwind.config.ts called hero:

backgroundImage: {
        hero: `url('data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 600 600'%3E%3Cfilter id='a'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='2' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23a)'/%3E%3C/svg%3E')`,
},

I tried using it in global.css like this:

.fill-grain {
    @apply before:bg-hero;
}

But it throws an error saying Failed to compile:

failed-to-compile-sc

How can I use an inline svg with TailwindCSS?