Pastel Background Maker
Make a pastel background in your browser: soft blobs of pastel colour melting into a light ground, with an optional glow from the corners, a fine grain and small flat shapes such as dots, rings and plus signs. Everything is drawn from numbers by our own code, not photos. Pick four blob colours, a background and a shape colour, then set how many blobs there are, how big and how soft they are and how wobbly their outlines get. The same seed always gives the same picture at a given size; press New seed for a new layout. Tick Seamless for a tile that joins edge to edge. Download a PNG at 12 screen sizes from 4K desktop to phone, a full-page print PDF (Letter or A4) or a 300 DPI print PNG. Nothing is uploaded.
100% private — everything runs in your browser. Everything runs in your browser; nothing is uploaded.
The download is drawn at full size from the same seed and settings as the preview, so it has the same layout with finer detail. The same seed always gives the same picture at a given size.
Picture
Colours
Size
Runs in your browser with our own code: nothing is uploaded or saved. You may use what you make here, including commercially, with no credit needed.
How to make a pastel background
- Choose a preset, such as cotton candy pink and blue, peach and mint, lavender haze or soft rainbow blobs.
- Set the number of colour blobs, their size, softness and wobble.
- Add small shapes and grain, and set the corner glow.
- Pick the background, the four blob colours and the shape colour; tick Seamless for a repeating tile; change the seed until you like it.
- Pick a screen size and download the PNG, or download the print PDF or the 300 DPI print PNG.
What you can use it for
- Desktop and phone wallpapers
- Social media post and story backgrounds
- Slide and title backgrounds
- Invitations, cards and stationery backgrounds
- Website hero sections
- Seamless page backgrounds and printed paper
The 12 presets
| # | Preset | Blobs | Shapes | Grain |
|---|---|---|---|---|
| 1 | Cotton candy pink and blue | 9 | None | Light |
| 2 | Peach and mint | 8 | None | Light |
| 3 | Lavender haze | 7 | None | Light |
| 4 | Baby blue gradient | 6 | None | Light |
| 5 | Lemon and lilac | 8 | None | Light |
| 6 | Sage and cream, grainy | 7 | None | Strong |
| 7 | Pastel sunset | 10 | None | Light |
| 8 | Soft rainbow blobs | 14 | None | Light |
| 9 | Pastel shapes on cream | 5 | 40 | Light |
| 10 | Dreamy lilac and pink | 9 | 12 | Light |
| 11 | Minimal mint with dots | 4 | 18 | Light |
| 12 | Grainy blush gradient | 6 | None | Strong |
Each preset only fills in the fields; change any colour, setting or the seed afterwards.
The controls
| Control | Range |
|---|---|
| Colour blobs | 0 to 24 |
| Blob size | 5 to 100 |
| Softness | 0 to 100 |
| Blob wobble | 0 to 100 |
| Small shapes | 0 to 60 |
| Shape size | 5 to 100 |
| Grain | 0 to 100 |
| Corner glow | 0 to 100 |
Download sizes
| Size | Pixels |
|---|---|
| 4K desktop | 3840 × 2160 px |
| QHD desktop | 2560 × 1440 px |
| Full HD | 1920 × 1080 px |
| Ultrawide | 3440 × 1440 px |
| Phone | 1080 × 2400 px |
| Large phone | 1290 × 2796 px |
| Tablet portrait | 2048 × 2732 px |
| Square post | 2048 × 2048 px |
| Story | 1080 × 1920 px |
| Header banner | 1500 × 500 px |
| Video call background | 1920 × 1080 px |
| Square tile | 1024 × 1024 px |
| Print, US Letter | PNG 2550 × 3300 px (300 DPI); PDF 1700 × 2200 px (200 DPI) |
| Print, A4 | PNG 2480 × 3508 px (300 DPI); PDF 1654 × 2339 px (200 DPI) |
Which tool to use
| You want | Use |
|---|---|
| Soft pastel blobs, grain and shapes, seeded and seamless | Pastel Background Maker (this page) |
| Pastel hex codes to use anywhere | Pastel Color Generator |
| Painted watercolour washes on paper texture | Watercolor Texture |
For pastel hex codes, try the Pastel Color Generator; for painted washes with paper grain, the Watercolor Texture maker.
More free tools
More background and wallpaper tools?
Background makers and image tools that run privately in your browser, with no sign-up and no watermark.
Frequently asked questions
Is this a photo?
No. Every blob, shape and grain speck is drawn by our own code from numbers, so the picture is yours to use.
Will the same seed give the same picture?
Yes. The same seed and settings give the same pixels at the same size. Our tests draw each preset twice and compare a hash of the PNG; a different seed gives a different picture.
Are my colours really in the picture?
Yes. Each blob has a solid middle in one of your four colours, fading out at its edge. Our tests check that every blob colour appears in the picture.
Can it tile without a seam?
Yes. Tick Seamless: the corner glow is turned off (a fade cannot repeat), and every blob and shape wraps round the edges, so copies placed edge to edge join with no seam. Our tests check the joins by pixels and check that every shape crossing an edge carries on from the opposite edge.
What shapes can it add?
6 kinds: dots, rings, half circles, plus signs, short sticks and triangles, scattered by the seed in the shape colour.
How do I get pastel colours?
Each preset is a pastel palette, and you can change any colour with the pickers. To find more pastel hex codes, use a pastel colour generator and paste them in.
Is it free?
Yes. There is no sign-up, no watermark and no limit.
Is anything uploaded?
No. Everything is drawn by JavaScript in your browser and nothing is sent anywhere.