I made this to show the dominant colors in an image on a color wheel.
What is was designed for is color studies, particularly for sunsets but it will work for anything. The workflow it's used for is in the file colorstudy-workflow.json. It looks like this:
The image to color node is from https://github.com/JayLyu/ComfyUI_BaiKong_Node I copied it over here because it's the only node from the pack needed for what this node was designed for.