CSS Color Module Level 4

CSS Color Module Level 4 introduces advanced features for handling colors on web pages. It enables more precise color specification, such as using alpha transparency (opacity) directly within color definitions, allowing for see-through effects. The module also adds support for newer color formats like Lab and LCH, which are based on human vision and enable more natural color choices. Additionally, it allows for CSS variables to be used within color functions, enabling dynamic and flexible color schemes. Overall, these updates give designers greater control and consistency in how colors appear across different devices and contexts.