Hue ShufflePlay nowMark when a cool gray starts counting as blue.
Is this closer to Gray or Blue?
Blue or Gray? keeps hue cool and moves saturation. You decide when a muted cool patch is still gray and when it has enough chroma to count as blue. Seven choices search that saturation range. The result, when one exists, is a percentage, not a hue angle. All blue or all gray means no boundary was observed. Scattered switches mean the run is too inconsistent to quote a percent.
Saturation is the only axis the generator is using for the search. The swatch does not secretly rotate hue. Later questions sit nearer the remaining saturation interval. Replay walks the same kind of range with a new sequence, still in percent.
A reported percent is where you started calling the cool patch blue on this screen. It is not a lab chroma threshold and not a reuse of the blue-green degree result. If you never switched, or you switched too often, you get that description instead of a number.
Quoting the result in degrees because other boundary games use hue is a miss. This one is saturation. Another miss is assuming a tiny percent always means you have sharp gray-blue vision. It only means that, on this display, your word changed near that generated point — or did not. Ask, each time, whether you would still call this object gray if you saw it across a room. If the answer is always no, you will finish with no gate. If it flips every other swatch, you will finish with inconsistency. Both are better than a decorative 2 percent.
The patch stays cool. What changes is how much color is in it. That is why the honest unit is percent, and why a leftover degree from another boundary game is the wrong souvenir. A tiny percent is not a badge; it is just where your word moved on this generated walk. If every patch looked blue, the honest line is that no gray-to-blue gate showed up, not that your gate is at 2 percent.
Stay on this page until the round is finished rather than bouncing to another game mid-score. The controls you just used are the whole rule set; nothing is hiding in a settings panel. If a result surprises you, replay once on the same screen before you change rooms or devices. That second sitting is the only comparison this site can honestly support. Everything else — other phones, other people, other times of day — is a different experiment. Use Play again or Next round from the same seat. The copy on this page describes this game only; it is not a template with the title swapped.
Hue stays cool. You decide when gray becomes blue.
A new run searches the same range with a fresh sequence.
These three routes are only suggested sequences. You can open any of the sixteen games on its own, leave a route halfway, or skip the pairing entirely. Each game keeps its own score on this screen and this sitting. Nothing here adds those scores into a combined rank, a skill grade, or a color-vision result. Play the first game to notice one kind of judgment, then the second to see how that judgment changes when the task is slightly different.
Start at a color-name boundary, then hunt for a single off tile.
Blue or Green? asks you to name a turquoise as one familiar word or the other. Spot the Different then asks you to find a single off tile among many similar ones. Start with the naming game so you feel how a hue can sit on a boundary; then hunt for a tile that is only a little off. The first game is about the word you choose. The second is about a visual difference with no name attached.
Remember one color, then rebuild another with the previews hidden.
Color Memory shows a target, hides it, then offers six close options. Blind Sliders hides the mix as well, so you rebuild from hue, saturation and lightness numbers only. Do memory first: you still see the choices. Then try blind mixing, where even your own swatch is gone until you reveal it. One task is recognition among near-misses. The other is reconstruction with no preview. Completing both shows whether you hold a shade better when you can compare, or when you mix it unseen.
Put hues in order, then mix a match with three sliders.
Hue Sorting keeps two end tiles fixed and asks you to swap the middle until the gradient is smooth. Color Matching keeps the target visible and lets you drag three sliders until the mix agrees. Sort first so you feel the slope between two anchors; then mix a single target by hand. Ordering is about relative steps. Matching is about landing on one destination. After the pair you can see whether you are steadier at arranging hues or at steering HSL onto a sample that stays on screen.
A score on Hue Shuffle is a count of what happened in this browser, on this display, in this room. Brightness, color temperature, night mode, True Tone, and the kind of panel you are looking at all change how close two colors appear. The same round on a phone and a laptop is not the same stimulus.
Room light and viewing angle matter as much as the hardware. A window behind you, a warm lamp, or glare on glossy glass can hide a difference that was obvious a minute earlier. Sit still relative to the screen if you want two runs to be comparable at all.
Fatigue and attention move the result even when the device does not. A long session, a second monitor, or playing while distracted will scatter your answers. Repeating the same game on one device, with similar light, is the only comparison that has much meaning here.
Do not treat another person's score, or a score from a different phone, as a measurement of your vision. These games are for noticing how you judge color in the moment. They are not a medical exam, not a color-blindness test, and not a calibrated lab result. If you only have a minute, remember three things: same device, similar light, no medical story. Everything else on this page expands those three.
Compare how this game asks you to look, then open a neighbor if you want a different kind of judgment.
| Game | What you do | What makes it different | Main focus |
|---|---|---|---|
| Blue or Gray? | Name a low-saturation cool color | Seven choices find when gray starts counting as blue. | Blue-gray boundary |
| Blue or Green? | Choose a color category | Seven choices find where turquoise becomes blue for you. | Color naming boundaries |
| Red or Orange? | Name a warm hue | Seven choices find your red-to-orange naming split. | Red-orange boundary |
| Pink or Purple? | Name a magenta hue | Seven choices find your pink-to-purple naming split. | Pink-purple boundary |
| Spot the Different | Find one subtly different tile | The odd tile hides in a growing grid with a shrinking gap. | Small color differences |
Name a low-saturation cool color
Seven choices find when gray starts counting as blue.
Choose a color category
Seven choices find where turquoise becomes blue for you.
Name a warm hue
Seven choices find your red-to-orange naming split.
Name a magenta hue
Seven choices find your pink-to-purple naming split.
Find one subtly different tile
The odd tile hides in a growing grid with a shrinking gap.
