Promptkoi

Watercolor Whale Beneath Boat

Stable Diffusion
By Varun Sharma Tested with Stable Diffusion SDXL 1.0

Watercolor Whale Beneath Boat is a tested Stable Diffusion SDXL 1.0 prompt for wall art work. It runs at Stable Diffusion SDXL 1.0 · Aspect ratio 2:3 · Steps 30 · CFG scale 6 · Sampler DPM++ 2M Karras, and ships below with the exact prompt text, usage notes, and 2 pasteable variations.

Last tested: July 2026 with Stable Diffusion SDXL 1.0

Part of the Stable Diffusion prompt library · see more watercolor prompts .

Remix in builder
A watercolor whale beneath a small boat in deep blue washes
Watercolor Whale Beneath Boat — Stable Diffusion SDXL 1.0, Aspect ratio 2:3

Prompt 

watercolor painting of an enormous whale suspended in deep water beneath a tiny rowboat, viewed from underwater looking up toward the surface, deep blue gradient wash darkening toward the bottom of the page, pale sunlight rays diffusing down through the water, the boat's hull a small dark silhouette above, soft pigment granulation in the depths, a strip of unpainted white paper at the waterline

Negative prompt 

photorealistic, 3d render, hard outlines, oversaturated, extra fins, deformed tail, fish scales, text, watermark

Settings

Model
Stable Diffusion SDXL 1.0
Aspect ratio
2:3
Steps
30
CFG scale
6
Sampler
DPM++ 2M Karras

How to use this prompt

The scale contrast needs both words — "enormous" whale and "tiny" rowboat; drop either and SDXL quietly equalizes them until the drama is gone. The vertical 2:3 frame with the wash "darkening toward the bottom" is doing the depth work: the gradient itself is the ocean. Keep "fish scales" in the negatives — SDXL sometimes textures whale skin like a koi, and it ruins the softness. cfg 6 lets the gradient breathe; above 7.5 the water bands into flat color steps. If the whale sinks into the dark, add "pale belly catching the light rays".

Variations to try

  • Mother and calf — "a calf swimming close along the whale's side, both angled up toward the light"
  • Square album art — regenerate at 1:1 with "the rowboat centered at the very top edge, whale filling the lower half"
watercolor wall art illustration

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Watercolor Wall Art Prompts Watercolor Illustration Prompts

What to do next

Adapt it →

Open this prompt in the Stable Diffusion builder, pre-filled, and change one layer at a time.

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Browse the full Stable Diffusion prompt library — every entry tested with its settings.
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For developers — copy this prompt as JSON 
{
  "title": "Watercolor Whale Beneath Boat",
  "prompt": "watercolor painting of an enormous whale suspended in deep water beneath a tiny rowboat, viewed from underwater looking up toward the surface, deep blue gradient wash darkening toward the bottom of the page, pale sunlight rays diffusing down through the water, the boat's hull a small dark silhouette above, soft pigment granulation in the depths, a strip of unpainted white paper at the waterline",
  "negative_prompt": "photorealistic, 3d render, hard outlines, oversaturated, extra fins, deformed tail, fish scales, text, watermark",
  "model": "Stable Diffusion",
  "model_version": "SDXL 1.0",
  "settings": {
    "aspect_ratio": "2:3",
    "steps": 30,
    "cfg": 6,
    "sampler": "DPM++ 2M Karras"
  },
  "style_tags": [
    "watercolor"
  ],
  "use_case_tags": [
    "wall-art",
    "illustration"
  ],
  "source_url": "https://promptkoi.com/prompts/stable-diffusion/watercolor-whale-ocean/"
}

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