Promptkoi

Bold Thunderstorm Logo Mark

Flux
By Varun Sharma Tested with Flux Flux.1 dev

Bold Thunderstorm Logo Mark is a tested Flux Flux.1 dev prompt for logo design work. It runs at Flux Flux.1 dev · Aspect ratio 1:1 · Steps 28 · CFG scale 3.5, and ships below with the exact prompt text, usage notes, and 2 pasteable variations.

Last tested: July 2026 with Flux Flux.1 dev

Part of the Flux prompt library · see more abstract prompts .

Bold thunderstorm logo with lightning bolt and rain cloud in navy and electric yellow on white
Bold Thunderstorm Logo Mark — Flux Flux.1 dev, Aspect ratio 1:1

How to use this prompt

A thunderstorm logo must balance the cloud and bolt so neither dominates. The electric yellow bolt against dark navy creates maximum contrast, which is essential for a mark that needs to read at app-icon size. Flat vector and thick lines keep it scalable; gradients and thin strokes break down at small sizes.

Variations to try

  • Minimal bolt — single yellow lightning bolt for a clean energy icon
  • Storm circle — bolt inside a circular cloud badge for a weather app
abstract logo design branding

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What to do next

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For developers — copy this prompt as JSON
{
  "title": "Bold Thunderstorm Logo Mark",
  "prompt": "A bold thunderstorm logo mark, stylized lightning bolt intersecting a rain cloud, dark navy and electric yellow palette, flat 2D vector, thick lines, no text, no letters, no gradients, energy brand symbol on white background",
  "model": "Flux",
  "model_version": "Flux.1 dev",
  "settings": {
    "aspect_ratio": "1:1",
    "steps": 28,
    "cfg": 3.5
  },
  "style_tags": [
    "abstract"
  ],
  "use_case_tags": [
    "logo-design",
    "branding"
  ],
  "source_url": "https://promptkoi.com/prompts/flux/bold-thunderstorm-logo-mark/"
}

The whole library is available as an open JSON dataset · developer docs.

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