Replace any color in a photo with one click. JPG, PNG, WebP — fast and free.
Click or drag & drop an image
JPG, PNG, WebP · until 10 MB
Files are not uploaded to a server — processed in your browser
Comparison: before and after
Upload an image, pick the source and new color, adjust the tolerance and click «Replace color».
Eyedropper — click the eyedropper icon and click the pixel on the image to pick the exact color.
Tolerance — the higher the value, the more shades are replaced. 1–10% is a precise replacement, 30–60% covers a wide range of similar colors.
Use the before/after slider for visual comparison of the replacement result.
Download the result in PNG, JPEG, or WebP — each shows the file size.
All processing happens in the browser via the Canvas API — the file never leaves your device.
Change Color in Photo Online — Free Color Replacement
Change color in photos online: replace one color with another in any image — free and without installing software. Upload a picture, pick the source and target colors, adjust tolerance — result in seconds.
How color replacement works
The tool analyzes each pixel of the image and compares its color to the source (target) color. If the distance between colors in RGB space does not exceed the specified tolerance, the pixel is replaced with the new color using smooth blending.
All processing is done in the browser via Canvas API — the image is never sent to a server. This guarantees privacy and instant results.
Eyedropper tool
The eyedropper button next to the "Source color" field activates color capture mode. In this mode:
- A magnifying loupe appears, showing pixels under the cursor
- The HEX code of the pixel under the center marker is displayed at the bottom of the loupe
- Clicking on the image automatically sets that color in the "Source color" field
Tolerance settings
| Tolerance | Result | When to use |
|---|---|---|
| 1–5% | Exact color match only | Flat fill images (icons, logos) |
| 10–20% | Close shades of the same color | Gradients, light shadows |
| 25–40% | Wide range of similar colors | Photos with lighting, anti-aliasing |
| 50–70% | Most colors of a given hue | Uniform backgrounds with noise |
| 80–100% | Aggressive replacement | Rarely — unwanted replacements possible |
Replacement algorithm
For each pixel, the Euclidean distance in RGB is calculated:
dist = sqrt((R-Rtarget)² + (G-Gtarget)² + (B-Btarget)²)
If dist ≤ tolerance × 2.55, the pixel is blended with a smooth ratio:
ratio = 1 - dist / maxDist new_channel = old_channel + (target_channel - old_channel) × ratio
Use cases
- Logo restyling — replace brand color for A/B testing or dark theme adaptation
- Background removal — chroma key effect with low tolerance on solid backgrounds
- UI color correction — change button and element colors on mockups without an editor
- Product personalization — show a product in different color variations
- Artifact correction — replace unwanted color patches in photos
FAQ
Is transparency (alpha channel) preserved? Yes. Transparent pixels are not affected — only RGB components of pixels with opacity > 0 are replaced.
Can I replace multiple colors at once? No, the tool works with one color pair per operation. Apply the operation sequentially for multiple replacements.
What format is the result downloaded in? Always PNG — this preserves transparency and avoids JPEG compression artifacts.
See also: Image Compression · Image Resize · Color Picker · Color Contrast
Useful articles
AI Photo Restoration: How to Restore Old and Damaged Photos
How the GFPGAN neural network restores old and damaged photos: technology, capabilities, step-by-step guide, and tips.
AI Photo Colorization: How Neural Networks Bring Old Photos to Life
How neural networks colorize black and white photos: DDColor technology, method comparison, practical tips, and step-by-step guide.