Drag the sliders to change the color. Use the buttons at the bottom to randomize or add and remove colors from the palette. You can also toggle if the colors should be similar or not. Screenshot the palette to use later.
This is a quick project idea I came up with just to make cool palettes. I'm not really gonna use this myself, but you might find it helpful. This isn't the best palette-making project, and it uses the simplest code to attempt to make something good. I recommend pressing the randomize button and tweaking the colors from there.