How to make a color-by-number worksheet
- Choose a picture with clear shapes and few colours: cartoons, emoji, animals, flags, logos or seasonal clip art.
- Set the grid size (squares across) and the number of colours. The number of rows follows the picture.
- Keep “Leave white background out” ticked so only the picture is numbered.
- Download the PDF: page 1 is the worksheet with the colour key and a name line; page 2 is the coloured answer key.
Grid size by age
| Age | Squares across | Colours |
|---|---|---|
| 4–6 | 10–16 | 3–4 |
| 6–8 | 16–24 | 4–6 |
| 8–11 | 24–35 | 5–8 |
| 11+ and adults | 35–60 | 6–12 |
The squares are made as large as the page allows (up to 15 mm), so small grids print with big, easy squares.
Classroom ideas
- Maths mystery picture: give each number a sum (for example 3 + 4 = 7); pupils solve the sums to find which colour goes where.
- Vocabulary: replace the numbers in the key with words or sounds to match.
- Early finishers and sub plans: print the same picture at two grid sizes so every pupil gets the right challenge.
- Coordinates practice: combine with the grid drawing tool for A1, B2-style grids.
Tips for good results
- If two colours look alike on the key, lower the number of colours.
- Detailed photos turn into noise at small grid sizes; clip art and flat colours work far better.
- Print the answer key on the back for self-checking, or keep it for the teacher.
Frequently asked questions
How do I make a color by number worksheet from a picture?
Choose a picture (cartoons, logos, emoji and simple animals work best), set how many squares across and how many colours, then download the PDF: page 1 is the worksheet with the colour key, page 2 the coloured answer key.
What grid size should I use?
15–20 squares across for younger children, 25–35 for older children, up to 60 for a long challenge. Fewer colours (4–6) make it easier.
Why are some squares blank?
With “Leave white background out” ticked, white areas stay blank so children colour only the picture. Untick it to number every square.
Can I use it for maths?
Yes: use the numbers as answers, and give pupils the sums to work out which colour goes where, or replace the key with your own clues.
Is my picture uploaded?
No. Everything is made in your browser, so your picture never leaves your device.
Last updated 2026-10-20.