Interface Essential

Business

Images Photography

Money Shopping

Programming

Computer Devices

Phone

Mail

Map Travel

Food Drink

Nature Ecology

Entertainment

Shipping

Culture

Health

Work Education

Artificial Intelligence

Arrows

Streamline 3.0

Ultimate

Core

Flex

Sharp

Plump

Micro

Freehand

Streamline Material

Nova

Cyber

Streamline Vault

Logos

Pixel

Google Material

Tabler

Remix

Feather

Iconoir

Carbon

Solar

Lucide

Brand Logos

Bootstrap

Atlas

Unicons

Ionic Icons

Phosphor

MingCute

Font Awesome

Majesticons

Mynaui

Radix

Heroicons

Flagpack

Whistle 1

Whistle

Whistle 2

Whistle Blowed

Whistle Blowing

Referee Whistle

Workflow Coaching Whistle

Party Confetti Whistle

Workflow Coaching User Whistle

<p>Sharp combines pure geometry and bold structure for a brutalist, high-tech feel. The Line variant offers clean, geometric strokes.</p>

Sharp Line

**Summary**: The foundational Sharp sub-style — 2px geometric stroke, square caps, zero-radius corners, monochrome. The set clusters at the serious and authoritative end of the spectrum with no warmth cues present. The tone signals "we built this with tools, not feeling" — engineering notation rather than approachability. Best for primary navigation and toolbars in enterprise software, developer tools, and professional SaaS where icons should serve the interface without leading it.

**Last updated**: 2026-04-23

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## Fit & Recommendation

### Primary use cases

- Primary navigation and UI controls in enterprise software
- Dense toolbars and action bars where icons must stay legible at 16–20px
- Developer tools and code editors
- Admin panels requiring neutral, distraction-free icon chrome
- Professional SaaS products where icons should serve the interface, not lead it

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## Brand & Cultural Identity

### What it communicates

> "We built this with tools, not feeling."

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## Visual & Technical Specs

### Visual properties

| Property | Value |
|----------|-------|
| Stroke weight | 2px |
| Fill | None |
| Corner treatment | Sharp / 0° miter, square caps |
| Color | Monochrome |

### Emotional Scores

Sharp Line is one of the colder sub-styles in the catalog — square caps, zero-radius corners, and 2px miter joins carry no warmth cues anywhere. It is among the hardest sub-styles in the catalog — 2px geometric stroke with miter joins is among the harder line styles possible. It is one of the more formal sub-styles in the catalog — constructivist geometry reads as engineering notation, not approachability. It is among the most serious sub-styles in the catalog — no decorative flourish, no curved end caps, no expressive construction. On its human↔mechanical character, it is among the most mechanical sub-styles in the catalog — pure geometric construction throughout makes the compass-and-ruler aesthetic literal.

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## Pairing & Compatibility

### Typography pairing

- **Primary**: IBM Plex Sans — shares the engineering culture, grid-first construction, and Swiss precision
- **Alternative**: Neue Haas Grotesk — geometric grotesque at its most authoritative
- **Display**: Space Grotesk — adds subtle personality without abandoning geometric structure
- **Body**: IBM Plex Mono — for developer tool contexts, this is the strongest pairing in the family
- **Avoid**: Nunito, Poppins, any rounded terminal fonts — direct contradiction with the sharp geometric DNA


<p>Sharp combines pure geometry and bold structure for a brutalist, high-tech feel. It’s raw, trendy, and unapologetic. It pairs best with typefaces that have strong construction, such as Futura, Gill Sans, or Space Mono.</p>

Brutalist icons

Sport Activities

Whistle icon - Sharp Line Set

Download Whistle SVG vector or transparent PNG icon in Line, Stroke, Geometric style(s) for Sketch and Figma. It belongs to Sharp Line vectors SVG collection.