What is the best color scheme to use in most data visualizations?
Use warm colors & blue
That's because these warm colors and blue are super versatile for categories. Yellow and orange and red look very pleasing together, but people will still perceive them as different: ⬤⬤⬤ — which is exactly what we want for categorical colors. And blue is more flexible than any other hue.
How can I create a color palette?
Another quick way to create a really unique color palette is by starting with three colors, for example, purple, orange, and green. You can add another color on top with low opacity, like a light blue. Now that you've created a brand new set of colors that can add so much more dimension to your work.