Interface Essential

Technology

Computers Devices Electronics

Coding Apps Websites

Internet Network Servers

Business Products

Work Office Companies

Money Payments Finance

Shopping Ecommerce

Shipping Delivery

Content

Design

Images Photography

Music Audio

Video Movies TV

Files Folders

Users

Avatars

Emails

Phones Mobile Devices

Messages Chat

Social Medias Rewards Rating

Travel

Hotels Spas

Wayfinding

Food Drinks

Furnitures Decoration

Lamps Lights Fire

Clothes Footwear Accessories

Tools Construction

Ecology

Nature Farming

Pets Animals

Weather

Health Beauty

School Learning

Science

Culture Religion

Romance

Family Babies Kids

Holidays

Sports

Outdoors Recreation

Entertainment Event Hobbies

Video Games

Crime War Protection

Transportation

Maps Navigation

Building Construction

Landmarks

Real Estate

Arrows Diagrams

Logos

Streamline 3.0

Ultimate

Core

Flex

Sharp

Plump

Micro

Freehand

Streamline Material

Nova

Cyber

Streamline Vault

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

Guidance – Free

Sauna

Entertainment

Outlined Line - Streamline Material

Activities

Sharp Line - Streamline Material

Rounded Line - Streamline Material

Cyber Line

Way Finding

Cyber Duotone

Nova Line

Hotel Sauna

Hotel

Sauna Heat 1

Plump Line

Sauna Room

Rounded Fill - Streamline Material

Sauna Fill

Flex Line

Flex Solid

Sharp Line

Plump Remix

Core Remix

Core Duo

Ultimate Bold

Sauna Heat

Core Line

Core Solid

Sauna Heat Person

Ultimate Light

Ultimate Regular

Ultimate Colors

Sauna Heat Person 1

Outlined Fill - Streamline Material

Freehand Duotone

Ultimate Duotone

Sharp Fill - Streamline Material

Flex Duo

Flex Remix

Flex Flat

Flex Pop

Flex Neon

Flex Gradient

Sharp Flat

Sharp Solid

Sharp Duo

Sharp Pop

<p>Ultimate is the world's largest icon family. The Multicolor version brings a playful, flexible look by combining colored outlines with filled shapes.</p>

**Summary**: 1px stroke with multi-color flat fills — each icon element gets an independent color (teal, orange, green, red visible). The friendliest and most playful sub-style in the Ultimate family, sitting near the warm-playful extreme of the entire catalog. The tone signals accessibility and delight: colour variety per element reads as informal, expressive, and immediately approachable. Best for consumer-facing marketing and onboarding, app explainer graphics, feature comparison sections, and social media content on light backgrounds; avoid in dense navigation chrome where multi-colour adds cognitive load.

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

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## Fit & Recommendation

### Primary use cases

- Consumer-facing product marketing
- App onboarding and explainer graphics
- Feature comparison sections on landing pages
- Any context where icons need to feel friendly, distinct, and immediately readable
- Social media graphics, product thumbnails, visual documentation

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## Brand & Cultural Identity

### What it communicates

> "We are here to make things easier and enjoyable."

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## Visual & Technical Specs

### Visual properties

| Property | Value |
|----------|-------|
| Stroke weight | 1px |
| Fill | Multi-color flat fills — each icon element gets independent color |
| Corner treatment | Rounded |
| Color | Multi-color (teal, orange, green, red) |

### Emotional Scores

Ultimate Colors is one of the warmer sub-styles in the catalog — the multi-color palette includes orange, red, and green with warm tones present throughout. It is one of the softer sub-styles in the catalog — thin 1px stroke combined with flat color fills creates a very light, soft visual presence. It is among the friendliest sub-styles in the catalog — multi-color icons are inherently approachable, with color variety signalling informality. It is one of the more playful sub-styles in the catalog — high color variety and flat illustration-style fills read as distinctly playful. On its human↔mechanical character, it is one of the more human-feeling sub-styles in the catalog — color differentiation per element feels expressive and human, not systematic.

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## Pairing & Compatibility

### Typography pairing

- **Primary**: Poppins — rounded geometric with warmth, compatible with multi-color expressiveness
- **Alternative**: Nunito — explicitly rounded, very friendly, matches playful Colors energy
- **Body**: DM Sans (Regular) — clean, non-competing body text
- **Avoid**: Cold geometric sans (Neue Haas), serif at any weight — creates jarring contrast with colorful flat icons


<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

Sauna Heat 1 icon - Ultimate Colors Set

Download Sauna Heat 1 SVG vector or transparent PNG icon in Creative, Stroke, Filled style(s) for Sketch and Figma. It belongs to Ultimate Colors vectors SVG collection.