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CSS

oklch()

OK Lightness Chroma Hue

A perceptually uniform color space where equal numerical changes produce equal visual differences.

技術的詳細

CSS oklch() is part of the CSS specification maintained by the W3C CSS Working Group. Browser rendering engines (Blink, WebKit, Gecko) implement the specification through their layout and paint pipeline stages. Understanding the rendering pipeline — Style → Layout → Paint → Composite — is key to writing performant CSS. Properties that trigger layout recalculation (width, height, margin) are more expensive than those that only trigger compositing (transform, opacity).

```css
/* Example: oklch() */
.element {
  /* Apply oklch to this element */
  display: block;
  margin: 0 auto;
}
```

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