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

Train 2

Train

Train 1

Train 4

Train 3

Train Fill

Train Station

Goods Train

Train Tunnnel

Train Front

Train Location

Railroad Train 1

Funicular Train

Railroad Train

<p>Plump is highly inspired by cartoons. With its warm appearance, this set of chunky icons is a natural choice for friendly brands.&nbsp;The Duo style is perfect for projects that require differentiation between actions, using color to convey meaning effectively. It also allows you to customize the line thickness.&nbsp;All Plump Duo icons are designed on a 48px grid with a 3px default stroke and two customizable colors.</p>

Plump Duo

**Summary**: Plump's two-color system — 3px rounded stroke with dark periwinkle blue primary and lighter blue secondary, the warmest duo icon system in the catalog, suitable for consumer products wanting colour hierarchy without losing the family's approachability. The 3px rounded chunky stroke creates warmth through shape language that more than offsets the cool blue palette, making this warmer than any equivalent duo system in geometric families. The tone signals structured warmth: "we differentiate with warmth, not austerity." Best for consumer products wanting two-tone colour hierarchy, help and onboarding flows differentiating action types, and products with a defined brand blue where the rounded construction keeps the system approachable.

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

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## Fit & Recommendation

### Primary use cases

- Consumer products wanting a two-tone icon system that still reads as warm and approachable
- Feature comparison and product overview sections
- Help and onboarding flows where colour differentiates action types
- Products with a defined blue brand colour where the duo treatment reads branded

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## Brand & Cultural Identity

### What it communicates

> "We differentiate with warmth, not austerity."

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## Visual & Technical Specs

### Visual properties

| Property | Value |
|----------|-------|
| Stroke weight | 3px |
| Fill | None (line only) |
| Corner treatment | Fully rounded |
| Color | Dark periwinkle blue + lighter blue secondary |

### Emotional Scores

Plump Duo is one of the warmer sub-styles in the catalog — blue is cool but the 3px rounded chunky stroke creates warmth through shape language, making this warmer than most duo systems. It is one of the more human-feeling sub-styles in the catalog on softness — the heavy 3px stroke has weight but curvature absorbs it. It is among the friendliest sub-styles in the catalog — chunky rounded construction dominates over the slightly structured two-color system. It is one of the more playful sub-styles in the catalog — the two-color differentiation adds mild structure while cartoon shapes prevent any formality. On its human↔mechanical character, it is one of the most human-feeling sub-styles in the catalog — chunky rounded strokes feel gestural and human, not systematic.

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## Pairing & Compatibility

### Typography pairing

- **Primary**: Nunito SemiBold — warmth absorbs the blue duo system without feeling corporate
- **Alternative**: Plus Jakarta Sans Medium — humanist warmth at a slightly more refined register
- **Body**: Nunito Regular or DM Sans Regular
- **Avoid**: IBM Plex Sans, cold geometric sans


<p>100% cute and playful. Features subtle curves and chunky shapes inspired by animated cartoons. Recommended for friendly brands.</p>

Friendly icons

Transportation

Train Front icon - Plump Duo Set

Download Train Front SVG vector or transparent PNG icon in Duo, Stroke, Filled style(s) for Sketch and Figma. It belongs to Plump Duo vectors SVG collection.