Color by Number for Kids: How It Works and What It Practices

Color by number is a coloring page where each space has a number, and a key shows which color goes with each number. Kids find a number, look it up in the key and fill in that space. It gives practice in recognizing numbers, matching numbers to colors and following simple steps. Most children are ready somewhere around preschool or kindergarten, but every child is different.

How color by number works

A color by number page has three parts:

1. The picture, split into spaces. Each space has a small number in it.
2. The key, usually at the top or bottom. It shows each number next to a color, such as 1 = red, 2 = blue.
3. The reveal. As kids fill in spaces, a picture appears, such as a fish, a rocket or a dinosaur.

Some kids like to do all the 1s first, then all the 2s. Others go space by space. Either way works. Pages for younger kids use a few numbers and big spaces. Pages for older kids may use more colors and smaller spaces.

What it gives practice in

Color by number asks kids to do a few small things over and over:

• Recognize written numbers.
• Match each number to a color in the key.
• Name and pick out colors.
• Follow a simple rule from start to finish.
• Color inside small spaces, which uses hand control.

That is practice, not teaching. We have not found good research showing that color by number improves math or reading, so we do not claim it. It is best thought of as a fun puzzle that happens to use numbers.

When to start

A child is usually ready when they can:

• Recognize the numbers on the page, at least 1 to 3 or 1 to 5.
• Name a handful of colors.
• Hold a crayon with some control. The American Academy of Pediatrics notes that by about age 3, many children hold a crayon between the thumb and fingers, and by 4 to 5 many draw with more purpose.

For many children, that lines up with the preschool or kindergarten years. Some are ready earlier, some later. If a page causes frustration, put it away and try again in a few months.

Tips for getting started

• Start small. Pick pages with only 3 or 4 numbers and big spaces.
• Set out only the colors in the key. Fewer crayons means fewer mix-ups.
• Color the key first. If the key is in black and white, have your child color each number's box first. Then the key is easy to read.
• Do the first space together. Point to a number, find it in the key, pick the crayon and fill it in.
• Let mistakes go. A purple space that should be blue does not matter.

You can find printable pages on our color by number page. They are free to print in US Letter and A4, and kids can also color them online in the browser with no account.

When free coloring is better

Color by number is one kind of coloring, not the best kind. It has a right answer, and some children find that stressful or dull. Free coloring lets kids choose every color and decide what the picture should look like.

Try a regular page instead when:

• Your child is still learning their numbers and the page feels like a test.
• They want to pick their own colors.
• They are very young. Toddlers do better with big, simple shapes, like our toddler coloring pages.

Mixing both is a good approach. Our easy coloring pages and preschool pages are good for free coloring. For more on what coloring does and does not do, read our guide to the benefits of coloring for kids.