Gradientle

About Gradientle

Gradientle, from Odd Behavior Studios, gives you one gradient a day. The four corner tiles are fixed and define the colours the gradient runs between; everything else is shuffled. Drag one tile onto another to swap them, and keep going until the whole grid flows evenly from corner to corner.

The gradients are calculated in the OKLAB colour space, where equal steps look equal to the eye, so a tile that looks slightly off really is off. Edge tiles, constrained by two fixed corners, are the easiest to place. If you get stuck, hints highlight tiles already in the correct position, and you can give up and try again the next day. The results screen shows moves made, moves needed, how far over par you went, hints used and your time.

There is one puzzle per day, and everyone plays the same one, so results can be compared. The site tracks games played, win rate and streaks, and offers dark mode. It suits players with a good eye for colour who like calm sorting puzzles.

How to play Gradientle

1. Study the four fixed corner tiles; they set the gradient's colours.
2. Drag a tile onto another to swap their places.
3. Work from the edges inward until the colours blend smoothly.
4. Use a hint to see which tiles are already right, or give up if needed.
5. Compare your moves with the par and share your result.

Tips

• Sort tiles mentally into warm and cool halves before placing any.
• Check hue, saturation and brightness separately; a tile wrong in only one is close.
• Fill the edges first, since each is constrained by two corners.
• After placing a tile, check all four of its neighbours.

Questions