[natemwilson]

I’ve never seen any CSS function that has this call back style where you get parameters that you can modify. So interesting! Are there any other examples of this or is this unique to lch?

[fireflies_]

This is "relative color" syntax, it works with a range of color spaces/color functions. The key is the "from" at the front. Here's the MDN documentation: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_colors/...

[halflife]

It may be confusing, but everything here is static param. The —- prefix is css variables, where inside a css declaration block you write: —bg: blue

[natemwilson]

The `l` isn't!

[KTibow]

Some newer ones like calc-size are also like this.