If you’re looking to create a perfect rainbow color palette for your designs, I recently found (and built) a simple free tool that might help.

A good rainbow palette isn’t just random bright colors — it’s about balance, smooth transitions, and proper contrast. Whether you’re working on UI design, branding, or social media graphics, having the right palette makes a huge difference.

Here’s what I personally focus on when creating a rainbow color palette:

Keeping colors evenly spaced across the spectrum
Avoiding overly saturated tones
Using gradients for smoother visual flow
Mixing with neutral colors (white/black) for better readability

To make this easier, I created a free tool where you can:

Generate rainbow color palettes instantly
Pick and adjust colors
Create gradients
Extract colors from images