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Color Challenge
A grid of colored tiles hides one slightly different tile. Find it quickly — as levels increase, the difference shrinks. 60-second timed mode. Best level saved locally.
100% Private & Secure
This tool runs in your browser.
Your data is never uploaded or stored.
Level
1
Time Left
60s
Best Level
—
Find the tile with a slightly different color. The difference shrinks each level.
Grade Scale
Amazing
Level 15+
Great
Level 10–14
Good
Level 7–9
Average
Level 4–6
Needs Practice
Level 1–3
How to use
- 1
Click Start to begin.
- 2
Find and click the tile with a different color.
- 3
Keep going as it gets harder each level.
Why use this tool?
-
Fast, instant results — no waiting, no page reloads.
-
Clean, focused interface designed for developers.
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100% private — everything runs in your browser, nothing is uploaded to any server.
Frequently Asked Questions
How does difficulty increase?
The color difference between tiles decreases each level.
Is there a time limit?
Yes. 60 seconds per round.