The 3-Color Rule: How to Choose Your Palette Without Blinding Your Readers

Published May 29, 2026 by David

I’ve seen carousels that made me want to shut my eyes. Not because of the text—because of the colors.

90% of visual headaches on social media come from one mistake: colorimetry. Some creators treat their palette like a giant box of crayons. The result? A rainbow that kills credibility in two slides.

Good design is like a well-tailored suit: it must be cohesive. And the pros’ secret? The 60-30-10 rule.

1. The Background (60%): The Invisible Foundation

This is the structure of your carousel. It should take up 60% of the space and not assault the eyes.

• Avoid: Bright red, neon yellow, psychedelic gradients. Your brain will hate you after 3 slides.
• Do: Neutral or deep tones. Navy blue, anthracite gray, sand beige, or off-white. These colors breathe and don’t strain the eyes.

2. The Text (30%): Readability First

If your reader has to squint to read your tip, they’ll scroll. End of story.

• Dark background? White or very light gray text.
• Light background? Black or dark gray text.

No half-measures. No fluff. Just pure contrast.

3. The Accent (10%): The Detail That Makes the Difference

This is your personal touch. A color that shouldn’t exceed 10% of the design.

• Where to use it?
• Bold keywords.
• Slide numbers.
• Swipe arrows.
• Your CTA (call-to-action button).

Pro tip: Use your logo’s color. It’s the only one that guarantees brand recognition everywhere.

The Problem? The Time It Takes

Creating a palette is simple. Applying it across 10 slides without mistakes—while managing safety margins—is another story. And it costs you 2 hours of work for mediocre results.

The Solution? Let AI Handle It

The AI Studio has built these rules into its engine. You dump your ideas, pick a vibe, and in seconds, you get a carousel that’s perfectly contrasted, readable, and professional.

👉 Stop wasting time on colors—try CarouselCraft Studio now!

Les illustrations de ce blog sont généreusement mises à disposition par les photographes d' Unsplash.