Color by number vs paint by number
The same idea, seventy years apart. Where the terms came from, which one people mean today, and the three things the digital version genuinely changed.
The two phrases are used interchangeably, and for most conversations that is fine — both mean an outlined picture divided into numbered areas, where each number tells you which colour goes in it. But they come from different eras and different materials, and the differences are worth knowing if you are deciding which one you actually want.
Paint by number: the boxed kit
Paint by number is the older term and refers to a physical product. The commercial version was developed at the Palmer Paint Company in Detroit at the start of the 1950s, sold under the Craft Master name, and became a genuine mass phenomenon in the United States within a couple of years. The kit contained a canvas board printed with faint outlines and small numbers, a row of numbered paint pots, and a brush or two.
The origin story usually told alongside it is that the idea came from Leonardo da Vinci numbering sections of a work for apprentices to fill in. That is the story the company told; it has been repeated ever since, and it is best treated as an origin anecdote rather than as documented history.
The experience it produced was specific: you painted one colour at a time because you were washing a brush between colours, you waited for areas to dry so wet edges would not bleed into each other, and any mistake was permanent. Finished paintings were framed and hung, and they became a recognisable style of American domestic art — enough that the Smithsonian eventually exhibited them.
Color by number: the screen version
Color by number became the common term when the idea moved to phones and tablets in the 2010s. The structure survived exactly: outlines, numbered regions, a palette indexed by number. What changed is everything about the material.
In practice, "paint by number" today usually means either a physical kit or an app that wants to evoke one, and "color by number" almost always means an app. Neither term is wrong. If you are searching for a kit to buy, "paint by number" gets you closer; if you are searching for something to do on a phone, "color by number" does.
What actually changed
Drying time disappeared, and with it the order of work
On canvas, you work one colour at a time and let it dry, because that is what the physics requires. On a screen there is no wet edge, so working one colour at a time is a choice rather than a constraint — a good one, because filling every region of a colour before moving on is still the fastest way through a picture and the least likely to leave stragglers.
The palette stopped being physical
A kit has as many pots as fit in the box, and mixing them is either forbidden or fiddly. A digital picture can carry any number of colours at no cost, but more is not automatically better: a picture with fifty colours makes finding the regions of any one of them tedious. Numbrush carries twelve colours per picture, which is enough for smooth shading in a mandala and few enough that each colour still has a visible presence on the canvas.
A mistake stopped being a mistake
This is the largest change and the one most often thrown away. On canvas, paint in the wrong region is permanent damage. Many colour-by-number apps faithfully reproduce this — they fill the region in the wrong colour, or deduct a life, or break a streak. That is preserving an accident of oil paint as though it were a design feature.
Numbrush does not. Tapping a region that does not belong to the selected colour does nothing at all: no wrong fill, no penalty, no warning. There is no undo button because there is nothing to undo, and no eraser because nothing was ever put down in error.
What is genuinely lost
It would be dishonest to pretend the digital version is strictly better. A kit gives you a physical object at the end, the texture of real paint, and a canvas you can hang on a wall. The concentration that comes from an irreversible medium is real, and so is the pleasure of a physical brush. If those are what you want, an app is not a substitute.
What an app gives you instead is that you can do fifteen minutes of it on a bus without setting anything up, that a picture waits exactly where you left it for a month, and that the tiniest regions are reachable — a region the width of a hair is impossible with a brush and merely needs a magnifier on a screen.
Which term to search for
- Want a boxed kit with real paint → search paint by number, and check the canvas size and the number of paint pots.
- Want something on your phone → search color by number; almost everything under that phrase is an app.
- Want adult artwork rather than cartoons → add mandala, geometric or pattern to either search, since both markets are dominated by simpler imagery.
- Want it without advertising → this is the thing to check first, because it is where free colouring apps overwhelmingly differ from one another.
Frequently asked questions
Is color by number the same as paint by number?
The idea is identical: numbered regions and a numbered palette. The terms differ mostly by medium — paint by number usually means a physical kit with real paint, color by number usually means an app. People use both loosely and neither usage is wrong.
Who invented paint by number?
The commercial kits were developed at the Palmer Paint Company in Detroit at the beginning of the 1950s and sold as Craft Master. The frequently repeated story that Leonardo da Vinci numbered sections for apprentices is the company’s own origin anecdote rather than documented history.
Is colouring by number actually relaxing?
It is if the app does not add stress back in. The mechanics that undo the calm are penalties for wrong taps, timers, streaks you can lose, and interstitial adverts between pictures. Numbrush has none of those: a wrong tap does nothing, there is no clock, and there is no advertising anywhere in the app.
Do digital versions have fewer colours than kits?
Not inherently — a digital palette costs nothing to enlarge. The limit is practical rather than material: past a certain point, hunting for the last few regions of a colour becomes tedious. Twelve per picture is a common working figure and is what Numbrush uses.
Try it on a real canvas
Numbrush is colour by number for adults: mandalas, rose windows and geometric pattern work, twelve colours a picture, a magnifier for the tight spots, and a wrong tap that costs you nothing. Free, offline, no ads and no account.