# Product Sketch

Energetic marker sketch aesthetic for product design, featuring casual presentation with bold outlines and muted colors.

| | |
|---|---|
| Style | Product Sketch |
| Category | Illustration |
| Tags | product sketch, marker rendering, industrial design, concept art, design presentation, energetic, casual, technical drawing |
| Author | @styleref (https://styleref.io/u/styleref) |
| Palette | #ffffff #2f3238 #7e848c #c9cdd3 #c7923a #8a5a32 |
| Published | 2026-07-24 |
| Canonical URL | https://styleref.io/share/sosdgxo6-5161797d4b62 |

## Specification

Paste this into any AI tool. Keep the attribution line and the canonical URL.

STYLE REFERENCE — HARD CONSTRAINT (HIGHEST PRIORITY)

This style must be applied to ALL generated content (text, image, video).
If any part of the request conflicts with this style, the style OVERRIDES the request.
STYLE DEFINITION (to be operationally enforced):

Product Sketch

 • Output Format: Creative discipline: Illustration; Digital; Delivery mode: Still.
 • Mood & Personality: Energetic marker sketch aesthetic; casual, design-sketch presentation; Energy: Active; Emotional bias: Positive; Representation mode: Literal; Real-world accuracy: Loosely accurate; Minimal narrative; Humor: Occasional.
 • Colors: Palette: Solid Colors: [ #FFFFFF 55% (Background),  #2F3238 12%,  #7E848C 10%,  #C9CDD3 8%,  #C7923A 7%,  #8A5A32 4%,  #2E7D32 2%,  #6A1B9A 1%,  #1565C0 1%]; 3–5 colors; Mixed temperature; Saturation: Muted; Value contrast; No gradients; Color dominance: Background-dominant.
 • Light & Shadow: Lighting mood style: Studio-flat; Key light style: Diffused; Artificial; Light source count: Ambient; Shadow density: Light; Fill-light ratio: Even fill; Lighting presence: Implied.
 • Spatial Structure & Hierarchy: 2-point perspective; Single focal structure; Hierarchy: Strong; Symmetry: Asymmetrical balance; Balance: Center-weighted; Layout axis: Gridless; Plane separation: Shadow, Color/value shift; Visual density: Airy; Grid system: Free-form.
 • Surface, Material & Detail: Surface treatment: Matte; Texture: Marker bleed/feathering at edges; streaked marker fill bands from broad strokes; Texture usage: Subtle noise; Imperfection level: Intentional marker artifacts: edge bleed, uneven fill coverage, visible stroke starts/stops; Stylized realism; Micro-detail allowance: Minimal; Micro-detail types: Reflective highlights indicated with white gaps; simplified material cues (metal/wood/leather) via value blocks.
 • Shape Language: Hybrid; Primitive dominance: Freeform curves, Rectangles; Edge sharpness: Mixed: soft marker edges in fills + very crisp separated silhouette due to white border; Silhouette clarity: Recognizable; Negative space usage: Dominant; Angle usage: Limited.
 • Line & Stroke System: Structural outlines; Heavy; Confident, slightly wobbly hand-drawn outline; thickness mostly consistent with minor variation consistency; Stroke Color: Deep dark outline + separate thick white marker outline as a spacer/halo; Stroke joins: Round.
 • Background & Environment: Background type: Solid color; Environment mood: Studio; Background–Subject: Isolated; Background complexity: Minimal: white paper with scattered small rectangular confetti marks and visible real marker pens around the sheet(Marker pens in realistic photo quality); Prop styling: Curated.
 • Artistic Mediums & Techniques: Physical medium: Alcohol marker rendering on white paper look (large chisel-tip fills) + white marker for separation; Illustrative technique: Marker block-in with visible overlap/bleed; crisp highlight hits; minimal line detailing.
 • Inspiration Images: https://piteahvrjstrlirkpoid.supabase.co/storage/v1/object/public/images/public/1b048dad-776d-4dea-8cb9-2fe00aa96ee6.webp.
 • References: Industrial design sketch / product-illustration marker comp style; Temporal reference: Contemporary.
 •  White spacer outline rule: Add a thick white marker border between object and background; acts as separation/halo before the dark outline., Marker bleed as background energy: Use large marker strokes behind/around subject; allow visible bleed/overlap to create loose backdrop blocks., Detail economy: Invest detail in silhouette + a few highlight hits; keep interior rendering blocky with minimal linework., Material depiction rule: Materials (metal/wood/leather/food) described through bold value grouping + sparse texture marks rather than heavy detail.


ENFORCEMENT RULE: Before finalizing the output, internally verify that ALL elements comply with the style definition above. If compliance is uncertain, simplify or soften the output until it fully matches the style. Generated by StyleRef.io

## Other formats and live access

The specification above is the portable default. Tool-specific builds and a
ready-to-commit STYLE.md are available without a login:

**REST** (anonymous, read-only)

```
https://styleref.io/api/v1/styles/sosdgxo6-5161797d4b62?format=flux        # also: midjourney, diffusion, json
https://styleref.io/api/v1/styles/sosdgxo6-5161797d4b62/style.md           # a ready-to-commit STYLE.md
```

**MCP** (Streamable HTTP at `https://styleref.io/api/mcp`)

```
styleref://gallery/sosdgxo6-5161797d4b62
styleref://gallery/sosdgxo6-5161797d4b62/style.md
```

Or call the `get_style` tool with `ref` set to the slug above, and
`apply_style_to_prompt` to wrap a request for a specific tool.

Attribution: this style was created by @styleref. Keep the `Generated by StyleRef.io`
line and the canonical URL when you use a compiled spec, and credit the author.

Source: https://styleref.io/share/sosdgxo6-5161797d4b62