The CIE LCh color space is derived from the CIE Lab color space, which is also perceptually uniform, meaning the perceived difference between colors corresponds to their numerical difference. Both CIE LCh and CIE Lab are based on human visual perception, which enables finer control over chromaticity and colorfulness when creating a UI design. However, CIE LCh is often considered more intuitive because its polar coordinates (hue angle and chroma) are easier for humans to understand than the cartesian coordinates (a* and b*) used in CIE Lab.

Here are a couple more color spaces that also share some of the advantages of CIE LCh:

1. **DIN99**: This is a color space designed to be highly perceptually uniform. It's based on the CIE L*a*b* color space, like CIE LCh, but uses a specific formula to improve the color difference uniformity, making it potentially even better for selecting color differences in design.

2. **OKLab**: Proposed by Google in 2020, the OKLab color space is designed to be perceptually uniform, as well. Like CIE LCh, colors that look similar should be close together in the coordinates of the color space, and changes in coordinates should make intuitive sense (e.g., increasing lightness makes colors lighter).

Remember, while these color spaces share characteristics advantageous to UI design due to their perceptual uniformity, ease of use, and intuitiveness, ultimately, the choice of color space would depend on the specific requirements and constraints of the project at hand.
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