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Concept / Thick line

Thick line

A line with a broad width for outlines or marks

A broad line that makes outlines or marks.

Visual Treatments & Formal Design
Thick line · Medium-sized dog

Medium-sized dog

Both languages share the English example images. Japanese prompts are the recorded translations.

A phrase to start with

Broadens lines and contours.

Appearance and effects

Broad strokes make contours read strongly.

Visual traits

  • broad line weight
  • strong contour

Expected changes

  • Contours are more likely to stand out
  • Lines are more likely to feel prominent

Five examples

1 — Medium-sized dog
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2 — Cat
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3 — Teenage boy
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4 — Unoccupied interior
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5 — Valley with a river and mountain ranges
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Meaning and scope

Definition

A thick line broadens an outline or drawn mark, making a form's boundary or presence stronger. Line direction, form, material, lighting, and damage remain separate choices.

In more detail

It adjusts weight only; it does not decide curvature, surface texture, lighting, or volume.

Includes

  • broad outlines or drawn lines

Excludes

  • thin lines
  • line direction
  • material
  • lighting
  • or damage

What this does not imply

  • Straight or curved direction
  • a particular form
  • material
  • lighting
  • or damage

Variability

Systems vary in their interpretation of line weight, so naming the target contour as well can improve consistency.

Usage and adjustments

Usage

  • Specify line weight only

Distinguish similar expressions

  • Specify curvature and material separately

Typical uses

  • Strengthen the presence of contours

Possible failure modes

  • Lines render thin
  • Broad lines obscure detail

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From the same theme

Items linked through explicit membership in the same theme.