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Hue Harmony - Color Gradient Puzzle Game

Find your zen in this meditative color puzzle game. You're given a grid of scrambled color tiles and must arrange them into a smooth, seamless gradient. Horizontal, vertical, diagonal, or radial each level challenges you with different gradient directions. Perfect for designers training their color perception, or anyone who finds satisfaction in bringing order to chaos. Features 4 difficulty levels from 3×3 to 6×6 grids. Free, browser-based, surprisingly relaxing. It is built for quick sessions: clear rules, responsive controls, and smooth performance on desktop and mobile. Play a round, share your score, and jump back in without installs or accounts. Built for speed, clarity, and repeat use.

Level

1

Moves

0

Best

-

🎨

Find Your Zen

• Arrange tiles to form a smooth gradient

• Drag and drop to swap tiles

• Fewer moves = higher score

• Multiple gradient directions per level

Total Levels Completed:

0

How to Play Hue Harmony

  1. Study the target gradient - See the preview at the top showing your goal
  2. Click two tiles to swap them - Or drag and drop on desktop/mobile. Use the input panel and result panel to confirm output.
  3. Select and review: Watch the harmony meter - It shows percentage of correctly placed tiles. Use the input panel and result panel to confirm output.
  4. Select and review: Complete in fewer moves - Optimal solutions earn Masterpiece rating. Use the input panel and result panel to confirm output.
  5. Select and review: Progress through levels - Each level changes the gradient direction. Use the input panel and result panel to confirm output.

The Science of Color Sorting

Humans perceive color gradients intuitively. Our visual cortex is wired to detect smooth color transitions it's why gradients look 'right' and abrupt color changes feel jarring. This game taps into that innate sense, challenging you to reconstruct what your brain knows should exist.

The puzzle uses HSL color space (Hue, Saturation, Lightness) to generate mathematically smooth gradients. Each level shifts hue by 60° across the grid while keeping saturation and lightness consistent. Radial gradients are particularly challenging because distance from center determines color, requiring spatial reasoning.

Pro tip: Start from the corners they're anchor points with the most extreme colors. Then work the edges before filling the center. The 'hint' button highlights tiles that need to move, but using it won't affect your score. Optimal solutions typically require about half as many moves as there are tiles.