Square Image
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Solid Color Backgrounds

What is this tool?

A generator for plain, solid color images. Pick a color from the grid (or dial in any hex with the custom picker), choose a size, and download the file — no upload, no editing, nothing to install. The whole thing runs in your browser and the image is generated the instant you press Download.

When do you need a solid color background?

More often than you'd think:

  • Wallpapers — a plain black, gray, or pastel background for your desktop or phone keeps icons readable and OLED screens battery-friendly.
  • Video and streaming — solid backdrops for OBS scenes, intro slides, or a stand-in green screen.
  • Design and social — a base layer for stories, thumbnails, banners, or a clean backdrop behind product shots and text.
  • Testing — designers and developers use flat color images to check displays for dead pixels and to test layouts.

How do I download a solid color background?

  1. Pick a color — click any swatch in the grid, or use the rainbow swatch to choose an exact custom color. The hex code is shown so you can match your brand color precisely.
  2. Pick a size — Square 1080, Full HD 1920×1080, Phone 1080×1920, QHD, 4K, or type any custom width and height up to 10000px.
  3. Download — PNG by default (perfectly sharp and tiny for flat colors), or JPEG and WEBP if you need them.

Want a photo on that color instead of a plain sheet? Square Image puts your picture on a solid color background.

Frequently asked questions

How do I get a plain black or white background in 1920×1080?

Click the black (or white) swatch — first row of the grid — leave the size on 1920 × 1080, and press Download. The same works at 4K or any custom size.

Can I use my exact brand color?

Yes — click the rainbow swatch and enter any hex value in the picker. The hex code shown above the grid always reflects the current color, so you can double-check it before downloading.

What's the best format for a solid color image?

PNG. Flat color compresses losslessly to a few hundred bytes at any resolution, with perfectly clean edges. JPEG can show faint compression noise in flat areas — use it only if a platform demands it.

What sizes can I download?

Presets cover the common cases — 1080×1080 square, 1920×1080 Full HD, 1080×1920 phone/story, 2560×1440, 3840×2160 4K, and 1280×720 — and the custom option accepts any width and height from 1 to 10000 pixels.

Is the image generated on a server?

No — the file is drawn by your own browser and never touches a server. That's why the download is instant even at 4K.