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.
- 8 August 2026·14 min read
Shades of pink: 77 names, hex codes, and the measurement showing pink is not light red
Everyone repeats that pink is just light red. It is a claim you can test in about four lines of code, so I tested it. Lightening #ff0000 produces #ff7353, then #ffa088, then #ffc8b9. That is coral, salmon and peach. The pink ramp starts 40 degrees away, at a hue red never passes through.
- 7 August 2026·14 min read
Shades of purple: 86 names, hex codes, and the measurement showing every light purple is a faded one
Lavender, lilac, mauve, periwinkle, thistle. The light end of the purple vocabulary is unusually crowded, and the measurement explains why. Of 86 named purples, the 14 that sit above L* 70 average a chroma of 23. There is no bright vivid purple in sRGB to name, so the language named the faded ones instead.
- 6 August 2026·14 min read
Different shades of green: 80 color names, hex codes, and the measurement showing why the middle of green is the flattest ground on the color wheel
Sage, emerald, viridian, phthalo. Green color names spread across 127 degrees of the color wheel, more than four times the arc the red names occupy. That is not a richer vocabulary. It is a vocabulary compensating for the fact that a 34 degree stretch in the middle of green looks like one color.
- 5 August 2026·13 min read
What are the primary colors? RYB, RGB and CMY measured, and why the school answer reaches only half the color wheel
Red, yellow and blue reach 50.3 percent of the saturated color wheel. Everything from chartreuse through green and cyan to azure is outside what they can make. Here is the measurement, the two mixing operations that decide which three colors count as primary, and why artists still get green out of blue and yellow.
- 4 August 2026·12 min read
Shades of red: 65 names, their hex codes, and the measurement showing they are a brightness ladder, not a range of hues
Crimson, scarlet, vermilion, carmine. The shades-of-red lists read like a range of hues and measure like a brightness ladder. All 65 names fit inside 58 degrees of the color wheel, and what separates them is how dark and how vivid they are, not which red they are.
- 2 August 2026·12 min read
Shades of blue: 67 names, their hex codes, and the measurement showing only 18 are different enough to remember
The shades-of-blue lists are not padding as much as people assume. Measured pairwise, 62 of 67 named blues clear the just-noticeable-difference threshold. The catch is that side-by-side vision is not the sense anyone actually uses them with, and at memory tolerance the list drops to 18.
- 1 August 2026·13 min read
Warm and cool colors: the lists, the hex codes, and the measurement showing the wheel does not split in half
Every color wheel splits warm from cool down the middle. Measured against the Planckian locus, the actual thing color temperature refers to, the warm side runs 208 degrees and the cool side 152, and 100 of the 360 hues are filed on the wrong side.
- 31 July 2026·14 min read
Color theory, measured: where the wheel is honest and where it quietly lies
The color wheel treats twelve hues as evenly spaced. Measured against the eye, the steps between them range from ΔE 5 to ΔE 44, an eight-fold spread. Here is what color theory gets right, where the geometry stops matching perception, and a rebuilt wheel whose twelve stations actually are even.
- 30 July 2026·12 min read
Tetradic colors: four hues, six relationships, and one of them is always the weak link
Four colors 90 degrees apart look perfectly even on the wheel. Measured, the average square tetrad contains one pairing under ΔE 40, and the average triad contains none. Adding the fourth color does not widen the palette, it adds a weak spot.
- 29 July 2026·12 min read
Monochromatic colors: one hue, five swatches, and a contrast budget that changes with the hue you picked
Every guide gives the same monochromatic recipe: pick a hue, make five evenly spaced swatches. Measured across all 360 hues, that recipe produces a palette spanning ΔE 71 in green and ΔE 28 in blue. Same instructions, a quarter of the result.
- 28 July 2026·12 min read
Split complementary colors: the scheme is a detuned triad, and the measurements prove it
Split complementary is sold as the safe version of a complementary pair. Measured, the two split colors sit an average of ΔE 41 apart, barely half the distance to the base, and in a quarter of all rotations they are close to indistinguishable.
- 27 July 2026·13 min read
Tertiary colors: the six, the other three, and why none of them are halfway
A tertiary color is supposed to be halfway between a primary and a secondary. I measured all six of them against their parents. Not one is halfway, and the worst is three and a half times nearer one side than the other.
- 26 July 2026·12 min read
Triadic colors: the triangle, the examples, and why it is never equilateral
A triadic scheme is three colors spaced evenly around the wheel. Every guide draws it as an equilateral triangle. I measured the sides, and in half of all triads one of them is barely half the length of another.
- 25 July 2026·11 min read
Analogous colors: the sets, the schemes, and the trap in the wheel
Analogous colors are neighbors on the wheel. The usual advice is to pick three of them and stop thinking. That advice fails in the greens, and there is a number that shows exactly why.
- 20 July 2026·10 min read
What colors make brown? Every recipe, and why brown is really dark orange
Brown is the color everyone can mix and nobody can point to in a rainbow. That is not a coincidence. Once you see what brown actually is, every mixing recipe stops being a thing to memorise and starts making sense.
- 13 July 2026·10 min read
Complementary colors: what they are, and why your own eye proves them
Most guides treat complementary colors as a design rule you have to memorise. It is easier than that. Stare at a green square for thirty seconds, look away, and your own retina will hand you the answer.
- 9 July 2026·7 min read
How to play Meccha Chameleon on a Mac: one official route and four backups
The Steam page lists one operating system, and it is not yours. Five routes fix that: GeForce Now with the developer's blessing, CrossOver, Parallels, Boot Camp on Intel machines, or streaming from a PC in the next room. Setup steps for each, and a straight answer on which to pick.
- 6 July 2026·8 min read
What colors can dogs see? Blue and yellow, not black and white
The idea that dogs see only black, white, and grey is one of the most repeated pet facts there is, and it is wrong. Dogs see color. They just see less of it than you do, built from two cone types instead of three, which turns their world into blues, yellows, and a wide grey band where your reds and greens used to be.
- 29 June 2026·10 min read
Are you a tetrachromat? Why the viral color-counting test can't tell you
The quiz that tells you to count the bands in a color strip and report whether you are a tetrachromat is measuring your monitor, not your eyes. A screen emits only three primaries, so it physically cannot show the extra colors a fourth cone would reveal. Here is what tetrachromacy actually is, how scientists test for it, and what an online color game can honestly tell you about your color vision.
- 28 June 2026·11 min read
How to get good at Meccha Chameleon: the paint-and-color guide that trains your eye
Meccha Chameleon is one skill wearing a costume: matching a color to its surroundings well enough to vanish. Most guides tell you where to hide. This one trains the eye that makes the paint convincing — the part nobody else is teaching.
- 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 2026·22 min read
Every Color Memory Game variant explained: a complete how-to-play guide
Twenty-five game modes built around one obsession: how well you see, remember, and recreate colour. This is the long-form rulebook for every variant — what it tests, how scoring works, and what actually works to score well.