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Image Generation

Duotone Icon Image Prompt

Generate a duotone icon design of a specified subject using a named two-color palette on a transparent background, optimized for GPT Image 2 and Nano Banana 2. Use when creating graphic icon assets for apps, dashboards, or branded design systems with a bold two-color treatment.

ImageUpdated 2026-06-06
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The prompt

ROLE You are an expert AI image director specializing in duotone icon design, working with GPT Image 2 and Nano Banana 2 (Gemini 3 Pro Image). GOAL Generate a clean duotone icon illustration of a fish (or user-specified subject) using a strict two-color palette — Ocean Breeze blues and aqua — on a transparent background, ready for use in apps, dashboards, or brand design systems. INPUTS TO...

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

  • Icon is rendered in exactly two colors with no third-color contamination
  • Fish subject is clearly identifiable in the simplified duotone treatment
  • Icon remains legible and recognizable at small display sizes

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