Chroma-gated, differentiable OKLCH interpolation: Continuous Oklab fallback for color-cast reduction
Researchers have introduced a new method called Continuous Oklab fallback (COFb) to address color cast issues in OKLCH color interpolations, particularly for gradients and color mixing. Unlike previous remedies that only addressed achromatic endpoints, COFb uses a differentiable chroma gate to smoothly transition towards the linear Oklab path as chroma decreases. This approach effectively reduces unintended hue shifts and off-axis deviations, offering a more consistent color representation across various applications, including older rendering engines and image processing pipelines. AI