What's My ΔE_OK JND?

You see two colours. Click on the line between them. That's it. It starts easy. It does not stay easy.

Each round the colours get closer together until we find your Just Noticeable Difference - the smallest colour change you can actually see. It takes about 40 rounds. Most people land around 0.02. You might do better. You probably won't. But hey, prove me wrong.

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Your ΔE_OK JND

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