The linked content describes:

• The different color space of Oklch and RGB/HSL (HDR colors)
• The advantage of Oklch when you change a base color and your derived colors will keep the same assertions on contrast level

Warning

This feature landed in browsers at the end of 2022. According to our support policy this will become generally usable starting Dec 2024.

The oklch() functional notation expresses a given color in the Oklch color space. It has the same L axis as oklab(), but uses polar coordinates C (Chroma) and H (Hue).

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