--- title: "Core Flat Icons Set - 5771 customizable PNGs, SVGs, PDFs" product: "Streamline Icons, Illustrations and Elements" url: /icons/core-flat canonical_url: "https://www.streamlinehq.com/icons/core-flat" summary: "Core's illustrative sub-style — solid flat two-tone blue fills on rounded silhouettes, suited to onboarding flows, feature explainers, and educational content at display sizes (32px+). The controlled two-tone blue tonal system is neither warm nor cold, neither schematic nor expressive, producing a diagrammatic quality that communicates \"we illustrate without illustrating.\" The tone is informational and calm: functional illustration rather than brand storytelling. Best for illustrative onboarding, help and documentation feature explainers, and products with a two-tone blue brand palette that need display-size icon weight without the full expressiveness of gradient fills." --- # Core Flat Icons Set - 5771 customizable PNGs, SVGs, PDFs Core is timeless, like the Helvetica font or The Beatles. With its minimalist design and neutrality, it can adapt to any layout. The Flat style is easy to integrate into projects that need icons with a more illustrative purpose, working best at larger sizes. All Core Flat icons are designed on a 14px grid with two customizable colors. 5771 icons ## Fit & Recommendation ### Primary use cases - Illustrative onboarding flows and product tours - Feature explainer graphics in help and documentation - Marketing sections where icons carry visual weight at display sizes (32px+) - Products with a two-tone blue brand palette - Educational platforms and tools --- ## Brand & Cultural Identity ### What it communicates > "We illustrate without illustrating." --- ## Visual & Technical Specs ### Visual properties | Property | Value | |----------|-------| | Stroke weight | None | | Fill | Solid flat fills, two-tone | | Corner treatment | Rounded silhouettes | | Color | Two-color: dark blue + light blue tonal | ### Emotional Scores Core Flat is near neutral on warmth — the dark blue and light blue tonal system is controlled and reads as neither warm nor cold. It is near neutral on softness — the flat fills add visual weight while the rounded silhouettes offset it, producing a genuine midpoint. It is somewhat friendly — the two-tone blue is more neutral-professional than its Sharp equivalent, landing just on the warmer side of the midpoint. It is near neutral on playfulness — flat fills in a tonal system read as diagrammatic rather than expressive or severe. On its human↔mechanical character, it is somewhat mechanical — the flat geometric fills read as schematic, though rounded silhouettes reduce this quality slightly. --- ## Pairing & Compatibility ### Typography pairing - **Primary**: Inter or DM Sans — the two-tone blue tonal system is neutral enough that the standard humanist sans pairings work cleanly - **Alternative**: Outfit — slightly warmer, appropriate if Flat is being used in more illustrative consumer contexts - **Avoid**: Expressive display or decorative fonts — they compete with the flat fills ## Example icons - [3d Perspective Grid](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/3d-perspective-grid-oy2i8dhel9aizvaxo8gpln.png/3d-perspective-grid-9h7310xfdqrf5oxe39nktv.png?_a=DATAiZkSZAA0) - [Apply To All](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/apply-to-all-fw4l4lag0ae5i7f1pdg94.png/apply-to-all-dc8dz6hw1oeqht6d6lc7w8.png?_a=DATAiZkSZAA0) - [Attach File Add](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/attach-file-add-fjbv5ct0tesmrfaqjlkgr.png/attach-file-add-vwjtxavkzzj6bz05x37ul.png?_a=DATAiZkSZAA0) - [Attach File Off](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/attach-file-off-a2npknlvgugntagyzyz59.png/attach-file-off-h0cnjr6g08vovg2g4qwlw8.png?_a=DATAiZkSZAA0) - [Auto Fit Column Width](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/auto-fit-column-width-e6xs07sbjo56a9ot79k8bd.png/auto-fit-column-width-bxhbluu4nkh60bjhxw3d.png?_a=DATAiZkSZAA0) - [Auto Fit Row Height](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/auto-fit-row-height-arv8c80kptkigoeebds2.png/auto-fit-row-height-anz5dejd8ukcke66uzpyik.png?_a=DATAiZkSZAA0) - [Auto Save Backup](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/auto-save-backup-8do6rzu20wgxnwszf1o0u.png/auto-save-backup-1gnbj3q03g2txyyxurs58m.png?_a=DATAiZkSZAA0) - [Binder Clip](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/binder-clip-dg0gvrhwugojcknm8ury2.png/binder-clip-img52stydveg9jce8acxxc.png?_a=DATAiZkSZAA0) - [Binoculars](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/binoculars-e3lunyxpxp8ut6x2rgfrj.png/binoculars-lcpmvofe3gl6w3xyt95ylm.png?_a=DATAiZkSZAA0) - [Bomb](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/bomb-c7tlm6fy67fuuhtt6fif9.png/bomb-6uvga31x133oecefpq5l.png?_a=DATAiZkSZAA0) - [Brush Pen Tip Diagonal](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/brush-pen-tip-diagonal-6f2b2.png?_a=DATAiZkSZAA0) - [Brush Pen Tip Vertical](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/brush-pen-tip-vertical-44d70.png?_a=DATAiZkSZAA0) --- [View full sitemap](/sitemap.md)