Interface Essential

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Typeface

Content

Design

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Files Folders

Users

Avatars

Emails

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Messages Chat Smileys

Social Medias Rewards Rating

Travel

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Lamps Lights Fire

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Family Babies Kids

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Building Construction

Landmarks

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Arrows Diagrams

Logos

Cannabis

Streamline 3.0

Ultimate

Core

Flex

Sharp

Plump

Micro

Freehand

Streamline Material

Nova

Cyber

Streamline Vault

Pixel

Google Material

Tabler

Remix

Feather

Iconoir

Carbon

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MingCute

Font Awesome

Majesticons

Mynaui

Radix

Heroicons

Flagpack

Ultimate Regular - Free

File C Plus Plus

Ultimate Colors - Free

Programming Apps Websites

Logos Solid - Free

C Plus Language Logo

Development

Ultimate Light

C Logo

Ultimate Regular

Coding Files

Ultimate Bold

C Plus Plus 1

C+ Logo

C Plus Plus

Logos Block - Free

C Language Logo

Ultimate Light - Free

Logos Line - Free

Core Gradient

Public Domain

Core Solid

Core Duo

Usb Type C

Cables

Nova Solid

Ultimate Duotone

Ultimate Bold - Free

Ultimate Colors

File C Plus Plus 1

Temperature Celsius Alternate

Temperatures

Kameleon Duo

C+ File

Kameleon Pop

Kameleon Colors

Coding File C Plus Plus Tag

Freehand Duotone

Freehand Line - Free

File Code C Plus Plus

Freehand Duotone - Free

Nova Line

File Copyright C

Files Copyright

<p>Bold style features strong, solid shapes for instant recognition. It gives excellent legibility on dark backgrounds.</p>

**Summary**: Solid opaque fills with transparent cutouts and rounded outer silhouettes, monochrome — the highest-weight Ultimate sub-style. Notably harder and more serious than its line-weight siblings despite sharing the same rounded geometry. The tone signals confidence and directness: solid visual weight that reads as active, selected, or primary without requiring colour. Best for active states, mobile tab bars, badges, dark-mode-first products, and any context requiring maximum legibility at 12–16px; best used as the emphasis layer alongside Regular rather than as the sole icon weight.

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

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## Fit & Recommendation

### Primary use cases

- Feature callouts and hero icon moments
- Navigation tab bars on mobile
- Badge and status indicators
- Dark-mode-first products
- Any context requiring maximum legibility at very small sizes (12–16px)
- Promotional materials and app store graphics

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## Brand & Cultural Identity

### What it communicates

> "We are confident and direct."

---

## Visual & Technical Specs

### Visual properties

| Property | Value |
|----------|-------|
| Stroke weight | None (solid shapes) |
| Fill | Opaque fill with transparent cutouts |
| Corner treatment | Rounded outer silhouettes |
| Color | Monochrome |

### Emotional Scores

Ultimate Bold is near neutral on warmth leaning slightly cold — solid black fills are high-contrast and authoritative; not cold, but not warm. It is among the hardest sub-styles in the catalog — solid shapes represent the highest visual weight in the family and are unmistakably hard. It is somewhat formal — heavy fills read as authoritative and direct, with rounded silhouettes preventing full formality. It is one of the more serious sub-styles in the catalog — strong graphic weight signals seriousness with no decorative elements. On its human↔mechanical character, it is somewhat mechanical — rounded outer shapes retain some human quality while the density of fill reads as systematic.

---

## Pairing & Compatibility

### Typography pairing

- **Primary**: Archivo Black / Space Grotesk Bold — matches the visual weight of solid icons
- **Display**: Syne, Clash Display — adds graphic boldness in marketing contexts
- **Body**: Inter Regular — provides contrast between the heavy icon and light body text
- **Avoid**: Ultra-thin or hairline fonts — the visual weight imbalance is extreme and reads as unresolved


<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

File C Plus Plus icon - Ultimate Bold Set

Download File C Plus Plus SVG vector or transparent PNG icon in Solid, Filled, Bold, Glyph style(s) for Sketch and Figma. It belongs to Ultimate Bold vectors SVG collection.