UI Dashboard Background with Controlled Composition

### Prompt – UI Dashboard Background Generator
**Context**
- **Dashboard purpose** (e.g., sales analytics, dev‑ops monitoring): {{purpose}}
- **Brand color palette** (list hex codes, up to 5): {{palette}}
- **Preferred visual style** (e.g., low‑poly, pastel gradient, subtle texture): {{style}}
- **Key composition numbers** (describe placement, e.g., "central hexagon 20% width, three circles 15% from top‑right"): {{composition}}
- **Desired mood** (e.g., calm, focused, energetic): {{mood}}
- **Output aspect ratio** (e.g., 16:9, 4:3): {{aspect}}

**Task**
1. Act as a senior UI visual designer.
2. Produce a **Midjourney prompt** that will render an abstract background meeting the above constraints.
3. Include the following in the prompt:
   - `--ar {{aspect}}`
   - `--v 6`
   - Explicit color references using the hex values.
   - Numeric layout cues exactly as given.
   - Mood adjectives.
4. Return the prompt inside a fenced code block and a short **Usage Note** explaining how to layer UI components on top without loss of readability.

**Quality Bar**
- Background must be **low‑contrast** enough for overlaid charts.
- No text or recognizable icons.
- Prompt length ≤ 70 tokens.
- Colors must match the supplied palette (no extra colors).

**Constraints**
- Do not add decorative elements unrelated to the composition numbers.
- Ensure the final image is suitable for export as PNG at 1920×1080.
- Return **only** the markdown with the prompt and usage note.