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

Sharp Fill - Streamline Material Free

Step Over Fill

UI Actions

Rounded Line - Streamline Material Free

Arrow Curvy Down Left

Sharp Line - Streamline Material Free

Triangle Arrow Turn Down Left

Arrow Turn Up Right

Rounded Line - Streamline Material

Directions

Maps

Plump Line

Line Arrow Turn Up Left

Single Line Arrow

Core Line

Navigation Arrow Turn Slight Left

Reply 2

Send

Triangle Arrow Curvy Both Direction 2

Single Triangle Arrow

Sharp Fill - Streamline Material

Triangle Arrow Curvy Up Right Fill

Triangle Arrow Turn Down Right

Sharp Line - Streamline Material

Arrow Curvy Up Left

Ultimate Bold

Button Arrow Curve

Multimedia Controls

Platinum

Down Angle Arrow

Basic Arrows

Line Arrow Curve Down Right

Triangle Arrow Bend Up Right Large

Big Single Triangle Arrow

Triangle Arrow Curve Down Left

Triangle Arrow Curvy Left Right

Arrow Curvy Left Down

Arrow Curvy Up Down Alt Fill

Line Arrow Curve Up Right

Line Arrow Curvy Up Down 4

Line Arrow Turn Up Right

Right Angle Arrow

Triangle Arrow Curvy Left Up Fill

Arrow Curvy Up Right

Arrow Turn Forward

Line Arrow Curve Left Up

Line Arrow Curvy Up Down 3

Prompt Suggestion Fill

Triangle Arrow Bend Down Right Large

Triangle Arrow Curvy Both Direction 1

Triangle Arrow Curvy Up Left

Triangle Arrow Left Down

Triangle Arrow Turn Down Left Large

Triangle Arrow Turn Up Left

Triangle Arrow Turn Up Right

Arrow Curvy Right Down

Arrow Curvy Right Down Fill

Line Arrow Bend Down Left

Line Arrow Curve Down Left

Line Arrow Curvy Both Direction 4

Line Arrow Turn Down Right

Triangle Arrow Curve Down Right

Up Angle Arrow

<p>Core is the Helvetica of icons. Each icon is stripped to its essential form and has generous inner spacing. The Line variant offers a clean, minimalist approach with consistent line weights.</p>

<p>The Helvetica of icons. Core is stripped to essential form with generous spacing. It's a timeless workhorse for interface design.</p>

### **one sentence positioning**

Neutral UI infrastructure on a 14px grid, designed to disappear into the interface and scale consistently across the entire product.

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### **what it signals**

Clarity, modern UI logic, disciplined neutrality, durability, system thinking.

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### **best fit when**

- a neutral baseline that holds long-term without feeling dated is the goal
- the interface is dense and requires minimal, consistent icons
- standardising across multiple product teams with a modern shared foundation

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### **avoid when**

- strong warmth or playful personality is a brand requirement
- brutalist technical signalling is the intent
- icons need to act as expressive brand elements rather than functional UI chrome

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### **core visual rules**

- geometry: controlled rectilinear with rounded softening — frequent 45° angles, disciplined proportions
- terminals: rounded — consistent rounded caps on all line variants
- corner language: rounded with 45° diagonal discipline throughout
- curves: mathematical arcs, predictable construction across all categories
- detail density: low
- silhouette: compact, stable, engineered for dense UI comfort
- emotional tension: very low — intentional neutrality; the 14px grid forces simplification

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### **variants and hierarchy**

Core Line

- Universal UI navigation; invisible infrastructure that lets content and layout lead

Core Solid

- Dense UI contexts, active and selected states, small-size legibility emphasis

Core Remix

- Outlined + filled mix; graphic differentiation without colour for marketing and feature sections

Core Pop

- Multi-color navy + saturated palette; consumer onboarding and feature promotions

Core Duo

- Two-color blue system; polished SaaS products wanting colour-based hierarchy

Core Neon

- Magenta + navy; vivid colour identity and dark-adjacent interface contexts

Core Flat

- Two-tone blue silhouettes; onboarding flows and illustrative explainer content

Core Gradient

- Full-spectrum fills; landing pages and high-production marketing at display sizes

**line/solid pairing rule** Core Line for default and inactive states; Core Solid for selected, active, and primary emphasis. The 14px compact grid ensures both hold legibility at the same size without requiring a size increase for Solid.

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### **small-size behavior**

- recommended minimum size: 12px
- best range: 12–28px
- notes: The 14px grid produces icons that are naturally compact — internal detail is already minimal, so the family holds at smaller sizes better than 24px-grid alternatives.

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### **motion behavior**

- strengths: stable scaling, low visual noise, predictable morph paths between Line and Solid states
- ideal motion contexts: state transitions (inactive to active), subtle hover feedback, compact loading indicators, filter and chip animations in dense layouts

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### **typography pairing**

Strong matches for product UI

- Inter, IBM Plex Sans, SF Pro, Helvetica Now, Neue Haas Grotesk

More branded but compatible

- Söhne, Suisse Int'l, Graphik, DM Sans, Outfit

**type alignment rule** Pair with stable, neutral, UI-optimised typography. Core is the "Helvetica of icon sets" — the type should share that same calm, system-first philosophy. Disciplined, quiet, and built to serve the content.

**typefaces to avoid** Display fonts with strong visual personality (Syne, Playfair Display), hand-drawn or script fonts — the contrast between expressive type and deliberately invisible icons creates incoherence. The type should not be louder than the icons.

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### **mixing guidance**

Recommended with

- Micro — Core handles primary UI while Micro handles the density layer (tables, inline actions)
- Ultimate — nearly identical visual DNA; separate by component type or product section

Possible with normalization

- Nova — compatible rounded geometry; keep Nova in navigation and Core in secondary controls
- Streamline 3.0 — similar rounded language; isolate to separate product surfaces

Avoid mixing with

- Sharp — geometry contradiction; angular vs rounded within the same UI chrome is unresolvable
- Plump — extreme weight and proportion contrast
- Freehand — hand-drawn organics conflict with the engineered precision of Core

**normalization rules when mixing**

- keep Core as the primary UI layer across navigation, toolbars, and form controls
- reserve expressive families for illustrations, onboarding surfaces, or marketing pages
- never mix Core with a family of a different corner language within the same component

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### **primary use cases**

- SaaS dashboards and productivity tool navigation
- developer tools and dense admin panels
- fintech and operations software
- enterprise and B2B applications
- dense mobile interfaces and compact component libraries
- internal tooling and analytics platforms
- settings and configuration UIs

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### **secondary use cases**

- clean consumer apps where neutrality is a feature
- content platforms with complex navigation
- monitoring and real-time analytics interfaces

Minimal icons

Line Arrow Curvy Up Down 3 icon - Core Line Set

Download Line Arrow Curvy Up Down 3 SVG vector or transparent PNG icon in Line, Minimal, Stroke, Wireframe style(s) for Sketch and Figma. It belongs to Core Line vectors SVG collection.