Every palette the project ships (1,021 of them), grouped by the color each one is dominant in: a map is read onto three fixed pictures, and the hue it puts most of a picture in is the section it sits in here. Each is drawn as a render sweeps through it, folded where it does not close on the color it opened with. So what is on the page is the gradient a picture is read through, and not the handful of stops it was written as.
The palettes I made are free to download, under CC0, from Tools and data.
Rose (62 palettes)
Red (125 palettes)
Orange (123 palettes)
Yellow (98 palettes)
Lime (65 palettes)
Green (96 palettes)
Teal (75 palettes)
Cyan (57 palettes)
Azure (87 palettes)
Blue (109 palettes)
Purple (62 palettes)
Magenta (62 palettes)