Midjourney v6 Style Tuner and Aspect Ratio Guide: Customize Your AI Aesthetic

Midjourney v6 is widely known for its cinematic default look. However, if you are designing a brand campaign or illustrating a book, you might want a very specific color palette, texture, or hand-drawn line style. The **Style Tuner** feature allows you to train Midjourney temporarily to produce a custom aesthetic code that you can reuse in all your prompts.

1. Generating a Style Tuner Page

To start tuning, use the /tune command followed by your prompt. For example:

/tune prompt: minimalist cinematic dark tech cyberpunk vector illustration

Midjourney will generate a private web page link displaying dozens of side-by-side style variations. You simply click on your preferred styles and Midjourney will output a unique style code (e.g., --style 3b8ac79f).

2. Reusing and Sharing Styles

Once you have your code, append it to any future prompt. Even if the subject changes, the overall art style will remain consistent:

/imagine prompt: a smartphone showing a finance dashboard --style 3b8ac79f --v 6.0

This allows designers to build a cohesive visual identity across entire web pages or marketing assets without having to rewrite descriptive aesthetic prompt tags.

3. Aspect Ratio Control (--ar)

Never skip aspect ratio configuration. By default, Midjourney renders square images (1:1). To override this, use the --ar parameter:

• --ar 16:9: Best for desktop wallpapers, YouTube banners, and website hero sections.
• --ar 9:16: Ideal for mobile mockups, Instagram Stories, and TikTok videos.
• --ar 4:3: The classic photography ratio, excellent for landscape illustrations.