{
"subject": "a woman around 30, light brown skin, wavy brown hair tied back with loose strands framing her face, natural eyebrows and almost no make-up, looking straight at the camera with a calm expression and a slight closed-mouth smile. When the reader uploads their own photo, keep the uploaded face exactly: its shape, its features, the skin tone, the marks, the expression lines, the age and the hair, without slimming the face, without making it younger, without lightening the skin and without changing the eye colour",
"wardrobe": "a plain warm coral fabric, with no print and no sheen, draped around the shoulders and rising to just under the chin, covering any clothing; wide, soft folds, like the drape used in a colour test",
"action": "the person poses face on and still for the colour test, and the draped fabric throws colour back onto the face",
"scene": "a plain studio: a light grey seamless background with no objects and no drawn shadow; in front, a white table crosses the bottom third of the frame with three plain folded fabrics side by side, olive green on the left, petrol blue in the middle and mustard yellow on the right",
"composition": "vertical image in 3:4 ratio; the face in the upper third, centred, with the top of the head about 5% from the upper edge; shoulders and the coral drape filling the middle band; the three folded fabrics crossing the bottom band, slightly out of focus",
"camera": "straight on, at eye level, with no tilt; 85 mm lens, tight half-body framing, focus on the eyes, background and front fabrics slightly soft",
"lighting": "a large, diffuse studio light from the front and above, softbox style, with no hard shadow on the face; a round catchlight in the eyes; no coloured light, so it cannot falsify how the colours read",
"color_palette": "neutral grey of the background, warm coral of the drape, olive green, petrol blue and mustard of the fabrics in front; faithful colours, no filter and no temperature shift",
"style": "personal colour analysis photography, realistic and almost clinical, with natural skin texture: pores, loose strands and asymmetries preserved",
"materials": "matte fine-weave fabrics, no satin and no shine, and a white table with a matte finish",
"details": "keep the exact colour of each fabric, the face unretouched, the hair tied back with loose strands, the background flat with no vignette and the sharpest point on the eyes",
"negative_prompt": "text, letters, numbers, label, drawn palette, colour circles, heavy make-up, plastic skin, beauty retouching, changed facial features, coloured light, patterned background, deformed hands, watermark, likeness to a real famous person, AI artifacts"
}
How to use
Personal colour analysis is that test where a consultant holds fabrics up to your face and you see which colour lights up your skin and which one leaves you looking tired. This prompt builds the same scene from your photo: a drape at the neck and comparison fabrics on the table. It works in ChatGPT, Gemini and NanoBanana.
1. Upload a front-facing selfie in natural light, with no filter and no heavy make-up. A filter changes your skin tone and the test becomes a test of the filter.
2. Hold it to keeping your face: the prompt already asks for no slimming, no rejuvenating and no lightening of the skin.
3. Change the drape colour in the wardrobe field and run it colour by colour: coral, burgundy, petrol blue, olive green.
4. Compare the versions by looking at the area under your eyes, not at the fabric.
5. Write down the three colours that lit up your skin and take the list to your next shopping trip.
Tip: run the test again with the hair colour you are thinking of dyeing: the palette moves with the hair.
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