Guides & colour-science explainers
Long-form pieces on how the game works and how human colour vision works. Skim them between rounds, or read one through for a deeper feel for the game.
- 22 June 2026·9 min read
What color do two colors make? Paint and screens give different answers
Ask what red and green make and you get two correct answers that contradict each other. Paint says brown, your screen says yellow. The split is not a trick question, it is the difference between subtractive and additive mixing, and once you see it the whole color wheel stops being confusing.
- 15 June 2026·8 min read
Is black a color? Is white a color? It depends which definition you pick
Physics says black is the absence of light and white is all of it. Your visual system disagrees, and so does every color model your screen runs on. The argument is really about which definition of color you are using.
- 8 June 2026·8 min read
Color illusions: when your eyes report a color that was never there
Two people look at the same photograph and swear it shows different colors. Neither is lying. Color illusions are the cleanest proof that seeing a color is an act of inference, not a readout.
- 5 June 2026·7 min read
Cartoon characters and color: the memories you trust but still get wrong
You can name a cartoon character's color in a heartbeat. Reproducing the exact shade is a different test, and one most people fail by making it brighter than it ever was.
- 4 June 2026·7 min read
How long can you remember a color? It doesn't fade, it drops dead
Watch a color, wait, reproduce it. You expect the memory to soften the longer you hold it. It mostly doesn't. It holds full resolution for a few seconds and then disappears in one step, and that single fact changes how you should play.
- 3 June 2026·6 min read
Guess the flag by its colors: why you know the shape but not the shade
Naming a flag is recognition. Reproducing its colors is recall — a different, harder task. Here's the gap between the two, flag by flag, and the game that measures it.
- 3 June 2026·10 min read
Do brain games actually work? What the science says
The honest answer is that most brain games make you better at the brain game and almost nothing else. But there is one narrow exception the marketing never mentions, and it happens to be the thing a color game trains. Here is the difference between near transfer and far transfer, and where this game honestly sits.
- 2 June 2026·9 min read
What is color constancy? Why your brain ignores the light
Color constancy is your brain discounting the light so a banana stays yellow at noon and at sunset. It is a brilliant piece of engineering, and it is also why a remembered color is never quite the color that was there. Here is the mechanism, the famous case where it broke the internet, and what it means for anyone trying to match a shade.
- 1 June 2026·8 min read
Why you see colors that aren't there: afterimages explained
The green ghost you see after staring at red is not a trick of the light. It is the opponent-process machinery of your own retina, briefly stuck. Understanding why explains afterimages, why two colors can shift each other, and why staring at a color is a poor way to remember it.
- 31 May 2026·8 min read
How many colors can the human eye see?
Ten million is the number everyone repeats, but it was never really measured. The careful estimates land lower, the theoretical ceilings land far higher, and the most interesting gap is between the colors you can see and the handful you can hold in your head.
- 30 May 2026·8 min read
How to read a hex color code by eye
#f59e0b looks like a string of nonsense until you know the trick: it is three numbers stacked together, one for each light in your screen. Learn the pattern and you can read a color's hex code the way you read a clock.
- 29 May 2026·8 min read
The Stroop effect: why you read the word before you see the color
Show someone the word RED printed in blue ink and ask for the ink color. They stumble. Reading is so automatic that the meaning of the word arrives before the color does and gets in the way. That tiny delay has its own century of research behind it.
- 28 May 2026·7 min read
Memory colors: why a gray banana still looks yellow, and what it does to your score
Show a person a gray banana on a neutral background and they will see it as slightly yellow. The brain pastes the remembered colour of a banana onto the raw signal. The same machinery quietly bends every guess you make in a color memory game.
- 27 May 2026·7 min read
Color memory test: what your score actually says about how you remember color
Tile-match recall, hue-ordering, and exact-colour reproduction all show up under the same search term. They are not the same test and a strong score on one says almost nothing about the others.
- 15 May 2026·4 min read
Color Wordle: is there a Wordle for colors, and what would one look like?
“Color Wordle” is one of the most searched terms in this category, but the format barely exists. Here is what one would actually look like, and how close our Daily challenge gets.
- 15 May 2026·4 min read
Color memory vs color matching: what each one actually tests
People search for “color memory game” and “color matching game” almost interchangeably. They are not the same thing, and the difference matters if you want to train.
- 15 May 2026·5 min read
Color matching games for adults: what makes one actually challenging
Most color matching games stop being interesting the moment you can tell the colors apart at a glance. For an adult that’s round one. These are the ones built for the rest.
- 15 May 2026·6 min read
Color match games online: the categories, the good ones, and what to skip
Most search results for “color match game online” throw you into the same five Flash-era pages. The category is actually wider than that, and the good ones train very different skills.
- 9 May 2026·8 min read
How to train your eye for color: drills used by designers and photographers
A reliable colour eye isn't something you're born with — it's a habit. These are the drills professionals actually use, and they fit into ten minutes a day.
- 9 May 2026·8 min read
What is CIEDE2000? The color difference formula behind our scoring
Most colour games score guesses by comparing RGB values. That gives you a number, but it's the wrong number. Here's why we use CIEDE2000 instead, and what it actually measures.
- 9 May 2026·7 min read
The science of color memory: why your brain forgets the orange you just saw
The four-second flash feels like plenty of time. Then you reach for the sliders and realise you can't pin down whether it was teal or seafoam. Here's why.
- 9 May 2026·12 min read
Every Color Memory Game variant explained: a complete how-to-play guide
Eleven game modes, one core skill: see a colour, recreate it from memory. This is the long-form rulebook for every variant — what it tests, how scoring works, and what actually works to score well.