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Streamline 3.0

Ultimate

Core

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Ultimate Light - Free

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Ultimate Bold - Free

Ultimate Regular - Free

Freehand Line - Free

Conversation Chat

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Freehand Duotone - Free

Conversation Question Text 1

Conversation Question Warning 3

Ultimate Colors

Conversation Spy

Conversation

Stickies Duo

Global Conversation

Ecology Nature

Conversation Chat 2

Conversation Browser

Idea Conversation

Work Office

Freehand Duotone

Conversation Chat 3

Conversation Type Text 1

Conversation Chat 1

Conversation Speak

Ultimate Duotone

Conversation Chat Bubble

Conversation Question Warning 1

Ultimate Bold

Conversation Smile Type

Core Duo

Feedbck Reply Conversation

Chat Bubble

Plump Flat

Feedback Reply Conversation

Conversation Text

Ultimate Regular

Conversation Text Alternate

Conversation Question Warning 2

Ultimate Light

Flex Duo

Flex Line

Sharp Line

Conversation Smile Type 1

Conversation Chat 4

Conversation Chat 1 Alternate

Conversation Question Warning

Conversation Text 1

Conversation Question Text 2

<p>Ultimate is the world’s largest icon family, designed by 8 expert designers. The Duotone style enhances visual depth by combining colored lines and filled shapes, perfect for matching brand or project colors. Key advantages: 1—Customizable colors. Apply up to four different colors to icon elements. 2— Adjustable stroke thickness. Create looks ranging from thin to bold for varied aesthetics.</p>

**Summary**: 1px stroke with a three-layer fill system (colored stroke + colored tint fill + selective white fill), rounded throughout, color-customizable — the most expressive and depth-forward Ultimate sub-style for UI work. The layered fill system produces a gentle visual depth that feels modern and considered rather than flat or heavy. The tone signals personality and brand expressiveness: color hierarchy built into the icon itself rather than into the surrounding layout. Best for marketing pages, onboarding flows, and feature sections where icons carry brand color and visual dimension beyond standard UI chrome.

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

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## Fit & Recommendation

### Primary use cases

- Marketing pages and feature differentiation sections
- Onboarding flows and empty states
- Landing page sections where icons carry more visual weight than UI chrome
- Products with a defined brand color where icons should reflect it
- Hero visuals that need depth without full illustration

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## Brand & Cultural Identity

### What it communicates

> "We have personality and depth."

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## Visual & Technical Specs

### Visual properties

| Property | Value |
|----------|-------|
| Stroke weight | 1px |
| Fill | Three-layer: colored stroke + colored tint fill + white fill applied selectively |
| Corner treatment | Rounded |
| Color | Teal/cyan default (customizable to brand color) |

### Emotional Scores

Ultimate Duotone is one of the friendlier sub-styles in the catalog — the default teal/cyan is a cool colour, but the partial fill softens the coldness noticeably, landing as somewhat warm overall. It is one of the softer sub-styles in the catalog — the 1px stroke combined with a low-opacity fill creates a gentle, layered softness. It is one of the friendlier sub-styles in the catalog — the colour and fill combination reads as inviting rather than formal, leaning clearly friendly. It is one of the more playful sub-styles in the catalog — the two-tone colour adds personality and levity; not fully playful but clearly expressive. On its human↔mechanical character, it is one of the more human-feeling sub-styles in the catalog — colour warmth combined with fill depth humanises the icons visually.

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## Pairing & Compatibility

### Typography pairing

- **Primary**: Plus Jakarta Sans — rounded, slightly personality-forward, matches the tonal depth
- **Alternative**: Poppins — geometric warmth, compatible with color-forward icons
- **Body**: Inter or Mulish in Regular weight
- **Avoid**: Monospace fonts (personality mismatch); serif display at high contrast


<p>The world's largest icon family with encyclopedic coverage. Designed over twelve years, Ultimate offers every concept from common to rare icons. It's a neutral style and fits most use cases.&nbsp;</p>

The encyclopedia of icons

Conversation Question Warning icon - Ultimate Duotone Set

Download Conversation Question Warning SVG vector or transparent PNG icon in Duo, Stroke, Filled style(s) for Sketch and Figma. It belongs to Ultimate Duotone vectors SVG collection.