AI Photo Colorizer
Colorize black and white photos free in your browser. Choose from Natural, Warm, Cool, or Vintage colour palettes and bring your old family photos to life with realistic colour — no signup, no watermark, 100% private.
COLOUR PALETTE
Drop your black & white photo here or click to upload
Supports JPG, PNG, WebP — max 10MB
Colorized Result
How AI Photo Colorization Works
This AI Photo Colorizer uses a luminance-aware colorization algorithm running in your browser. The process begins by converting your image to pure greyscale to extract luminance data (the brightness value of each pixel, 0–255). It then maps this luminance to a realistic colour using a three-zone model: shadows (dark pixels) receive cool desaturated hues, midtones receive the main palette colour (skin tones, natural greens, sky blues), and highlights receive warm cream or light tones. Last updated: March 2026.
Unlike applying a simple CSS filter or sepia tone, this produces tonal variation across the image — dark areas and bright areas receive different colours, mimicking how real photographs capture light across different colour temperatures. The result is more natural than a flat colour overlay.
Colorize Historical and Family Photos
The most common use of photo colorization is bringing old family photographs to life. Portraits from the 1920s–1950s are typically in black and white; adding colour makes subjects feel more real, human, and present. Subreddits like r/ColorizedHistory have shown the powerful emotional impact of colourised historical photos, generating millions of views.
For best results on family portraits: use the Natural palette for realistic skin tones, or Warm for a golden-hour nostalgic feel. After colorizing, use the AI Old Photo Restorer to also fix fading and scratches.
Colour Palette Options Explained
- Natural: Balanced skin tones, sky blues, and natural greens — best for portraits and outdoor photos.
- Warm: Golden-amber tones, reminiscent of sunset or candlelight — ideal for nostalgic or indoor photos.
- Cool: Desaturated blue-grey tones — cinematic and moody, suited to architectural and street photography.
- Vintage: Sepia-brown warmth, like a hand-tinted antique photo from the early 20th century.
Tips for Realistic Colorization Results
Colorization quality depends on the contrast and clarity of the original. Photos with good tonal range (clear difference between dark and light areas) produce more convincing results. For portraits, the Natural palette reliably produces believable skin tones. If the result looks too monochromatic, try the Vivid palette for stronger saturation.