Midpoint
Two colors are shown; pick the one exactly halfway between them.
How to play ↓Two colors sit side by side. Below them are 7 swatches in a row. Pick the one that looks exactly halfway between the two, as the eye sees it, not as the numbers average.
Assist mode: 5 swatches instead of 7, spaced further apart, so the right one is easier to tell from its neighbors.
How to play
Five rounds. Each shows two colors, A and B, and a row of swatches between them. Pick the swatch you think is exactly halfway. You then see the true midpoint, your pick and the score from 0 to 10. The total is out of 50. Later rounds use closer colors and a few swatches that are not on the line between A and B at all.
"Halfway" means the average of the two colors in OKLab, a color space built so that equal numeric steps look like equal steps to the eye. Averaging plain sRGB numbers gives a different color, usually a duller or darker one. The reveal shows both so you can see the gap. Score is 10 minus how far your pick is from the true midpoint, reaching 0 at a distance of 0.12 (Delta E OK).
Controls
| Keys | Action |
|---|---|
| ←→ | Move between swatches |
| EnterSpace | Pick the swatch |
Ways to play
- Click, tap, or use the keyboard as above. The swatches are a group of options.
- Grays mode: both colors become grays and you judge lightness only. It has its own best score.
- Assist mode: five swatches instead of seven, spaced further apart.
- Nothing is timed.
Who this works for
This is a color game, so it is not equally playable for everyone. Players with low vision or color-vision deficiency may find the color mode hard or impossible; Grays mode is there for that reason, though it still needs sight. Swatches are labeled by position only ("Candidate 3 of 7") because describing their color would give the answer away. After each round the result is written out, with the numeric values of the true midpoint. This has not yet been checked with a screen reader or with color-vision simulations.