Interface Essential

Money Business

Computer Coding

Map Travel

Phone

Images Audio

Shopping

Building Construction

Work Office

Entertainment

School Science

Food Drink

Users People

Health

Ecology

Family

Sport

Culture

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

Envelope

Envelope 2

Envelope 1

Envelope 3

Email Envelope

Drawer Envelope

Envelope Sealed

Envelope Pigeon

Receipt Envelope

Envelope Letter

Envelope Back Front

Envelope Paper Document

Red Envelope Coins

Envelope Postcard

Email Envelope 3

Mail Send Envelope

Envelope Letter Front

Email Envelope 1

Send Email Envelope

Envelope Mail

<p>Streamline Vault. Kameleon Duo features dual-tone flat icons in bright colors for friendly, accessible interfaces.</p>

Kameleon Duo

**Summary**: Flat illustration inside solid two-tone blue circle containers on a 48px grid. The most professional and controlled Kameleon variant, with the blue tonal system adding structured order that the warm-palette variants lack. The tone signals disciplined illustration: the same circle-container format with colour restricted to a brand-blue palette, signalling systematic care over expressive energy. Best for consumer SaaS marketing with a controlled blue brand palette and feature sections where colour discipline must be maintained alongside illustration warmth; subject to the same 2014–2018 flat illustration durability caveat as other Kameleon sets.

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

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## Fit & Recommendation

### Primary use cases

- Consumer SaaS marketing with controlled blue brand palette
- Feature sections where colour discipline matters alongside illustration warmth

**Durability note**: The flat illustration aesthetic peaked in 2014–2018. Reads as slightly dated to design-literate audiences in 2025. Most durable in marketing and presentation contexts.

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## Brand & Cultural Identity

### What it communicates

> "Every feature deserves its own colour."

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## Visual & Technical Specs

### Visual properties

| Property | Value |
|----------|-------|
| Stroke weight | None |
| Fill | Flat illustration inside solid circle |
| Corner treatment | Circle — perfect circular container |
| Grid | 48px |
| License | Commercial |

### Emotional Scores

Vault Kameleon Duo is somewhat cold — the blue two-tone system of consistent light blue and dark blue creates an ordered, neutral-cool palette. It is one of the more human-feeling sub-styles in the catalog on softness — circular containers remain soft and the single palette adds structure without hardness. It is one of the friendlier sub-styles in the catalog — the blue tonal system introduces a professional register while circle containers prevent full formality. It is near neutral on playfulness — colour restriction creates systematic order while the set remains clearly consumer-facing. On its human↔mechanical character, it is near neutral — systematic blue-on-blue creates regularity while flat illustration content retains creative quality.

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## Pairing & Compatibility

### Typography pairing

Poppins, Plus Jakarta Sans, DM Sans, Nunito SemiBold — geometric with warmth; absorbs colour energy.


<p>Streamline Vault holds hidden gems: Guidance for signage, Platinum for luxury ecommerce, Block for Bauhaus design, Stickies for fun, Kameleon for flat color, Nasty for… well, you’ll see… and more.</p>

Icons with creative styles

Office

Envelope icon - Kameleon Duo Set

Download Envelope SVG vector or transparent PNG icon in Creative, Flat style(s) for Sketch and Figma. It belongs to Kameleon Duo vectors SVG collection.