{
"subject": "the complete logo of a fictional coffee shop brand, drawn as a brand file in flat art: on top, a symbol made of a thin outlined circle with a stylised coffee bean inside it — a vertical almond shape built from two symmetrical curves, with an S line down the middle, almost touching the top and the bottom of the circle without touching the sides; below the symbol, the word AURORA in capitals, in a geometric sans-serif typeface, thin strokes of constant weight and wide spacing between the letters; below the word, a thin horizontal line, slightly wider than it; below the line, the words ARTISAN ROAST in small capitals, in the same typeface, with even wider spacing. The only words written in the image are AURORA and ARTISAN ROAST",
"composition": "vertical image in 3:4 ratio; the logo block is centred horizontally and takes about 60% of the width; vertically it starts around 30% of the height and ends around 63%, leaving the top band and the whole bottom third completely empty; symbol, word, line and small text all sit on the same centre axis, with similar breathing room between them",
"color_palette": "two colours and nothing else: a deep, closed forest green background and the whole drawing in a light, slightly yellowed cream; no third colour, no gradient and no change of tone inside any element",
"style": "flat visual identity artwork, vector line, with constant line weight in the circle, the bean, the rule and the letters, crisp edges and clean corners; the look of a logo file ready to be used, not of a photograph and not of a mockup; no texture, embossing, shine, reflection, perspective or depth",
"details": "keep the line thin and equal in every element; the coffee bean centred inside the circle, almost touching top and bottom; the wide, even spacing between the letters of AURORA; the horizontal line slightly wider than the word; ARTISAN ROAST smaller and centred under the line; the background completely plain, nothing in the corners and no frame",
"negative_prompt": "photograph, mockup, card, paper, table, cup, loose beans, shadow, gradient, shine, embossing, texture, noise, perspective, frame, watermark, signature, extra text, extra letters, numbers, real brand logo, people, face, AI artifacts"
}
How to use
A good logo is the one that still reads small, in the app icon and on the stamp you put on an order. This prompt hands you the whole brand file — symbol, name and tagline — as flat two-colour art, in a 3:4 frame. It works in ChatGPT, Gemini and NanoBanana.
1. Swap the words in the subject field: where AURORA is, put your brand name, and where ARTISAN ROAST is, put your own tagline.
2. Describe the symbol by the object, not by the style. Instead of asking for something modern, say what to draw inside the circle in a thin line: a pair of scissors, a leaf, a key.
3. The colours live in the color_palette field, and there are only two: one for the background and one for the drawing.
4. Ask for the same brand in 1:1 and with the symbol alone, without the words. That is the version that becomes a profile picture.
5. Generate it three times before choosing. A logo is chosen by comparing, never on the first output.
Tip: shrink the result to the size of a thumbnail. Whatever disappears there is detail the drawing does not need.
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