🎛️Product Colour Variant Generator

One product, six colours, one afternoon of photography per colour: that is the maths that keeps small sellers from listing their full range. The Product Colour Variant Generator collapses it. Shoot one clean sample, then change product colour in photo form without a reshoot: create the red, blue, green, black and white versions your supplier offers, each as a separate image ready for a variant listing. It is a targeted hue shift image tool, not a filter over the whole picture.

How it works

1. Upload one product photo, ideally on a white or transparent background.
2. Click on the product colour you want to replace. The tool samples it and builds a mask of every pixel within the tolerance you set, so you can grow the selection until the whole panel is covered without bleeding into the background.
3. Tick the variants to generate: red, blue, green, black, white, or add custom colours by hex code.
4. Preview each variant; the mask preview shows exactly which pixels will change.
5. Download a single variant or the whole set as a ZIP with the colour name in each file name.

Under the hood each variant is a hue and saturation shift applied only inside the mask, with lightness preserved. That is why stitching, shading and highlights survive: a fold in a red T-shirt is still a fold in the blue one. Black and white are handled as desaturate-and-darken or desaturate-and-lighten, since a pure hue rotation cannot produce them. The result is a way to recolour product image files that keeps them looking photographed.

Why it matters

Variant listings are how marketplaces group your sizes and colours under one page, and each product colour variant needs its own image.

• Shopify allows up to 100 variants per product and shows the variant image when a colour is selected.
• Amazon variation families work the same way: each child ASIN needs a main image that shows that colour on pure white (RGB 255, 255, 255).
• Etsy listings with variations sell better when the photo matches the option chosen.

Generating variants from a single photo means one photoshoot, consistent framing across the family, and the ability to list a colour before the stock arrives.

Tips

• Sample from a mid-tone area of the product, not a highlight or a deep shadow, so the tolerance mask grows evenly.
• Increase tolerance in small steps and watch the mask preview; when the background starts to tint, step back.
• Neutral or mid-saturation source colours recolour best. A pure white product cannot become red convincingly because there is no saturation to shift, so shoot the most saturated colour you have as the master.
• Match the exact brand shade by picking it from a supplier swatch with the Image Colour Picker or pulling the dominant tones of a reference photo with the Colour Palette Extractor.
• Remove the background first with the Background Remover so the mask never has to fight a coloured backdrop, and finish with the Photo Enhancer if a variant needs a touch more contrast.
• Be honest: variants must resemble the real product, so compare against a physical sample before publishing.

Privacy

Masking and recolouring run in your browser with the Canvas API. Your images never leave your browser, and nothing is stored once you close the page.