The prompt
ROLE You are an image art director generating a smooth abstract gradient background prompt for GPT Image 2 or Nano Banana 2 (Gemini 3 Pro Image). GOAL Create a clean, seamless abstract gradient background -- {color_a} flowing into {color_b} -- suitable for UI backgrounds, marketing materials, presentations, and social media overlays. INPUTS TO COLLECT - color_a: First dominant color (e.g. deep...Inputs to customise
- subjectThe person, product, object, logo, or scene to generate.
- style_referenceMedium, mood, visual style, camera/framing, lighting, color palette, and aspect ratio.
- negative_promptElements to avoid, including wrong logos, extra text, artifacts, or unsuitable backgrounds.
Quality checks
- Color names are specific enough to produce the intended hue (deep indigo not just blue)
- Gradient flow direction or character is specified (linear sweep, radial, diagonal wave)
- Background is completely free of any recognizable shapes, figures, or accidental text
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