--- title: "Flex Duo Icons Set - 5772 customizable PNGs, SVGs, PDFs" product: "Streamline Icons, Illustrations and Elements" asset_count: 5772 url: /icons/flex-duo canonical_url: "https://www.streamlinehq.com/icons/flex-duo" summary: "Flex Duo uses three colors across unfilled outlines shaped by flowing curves." --- # Flex Duo Flex Duo uses three colors across unfilled outlines shaped by flowing curves. 5772 icons License: Commercial ## Fit & Recommendation ### Primary use cases - Place icons beside navigation labels or controls. - Use symbols to identify sections in documentation or presentations. #### Practical guidance - Check the artwork against each intended background. - Inspect small gaps and edges at the final display size. - Keep color roles consistent across the layout. ## Visual & Technical Specs ### Visual properties - The icons have no fill. - Smooth curves form the edges without geometric corners. - The set uses three colors. One can be neutral, and the other two can be accent or brand colors. #### Technical specifications - Grid: 24x24px. - Stroke: 1px. ### Emotional Scores These scores describe visual character. They are editorial judgments, not measured audience reactions. Each scale runs from 0.00 at the first word to 1.00 at the second, with 0.50 in the middle. For example, a lower Warm to Cold score means a warmer appearance. Flex Duo - Warm to Cold: Slightly warm (0.40). - Soft to Hard: Strongly soft (0.20). - Friendly to Formal: Slightly friendly (0.40). - Playful to Serious: Slightly playful (0.45). - Human to Mechanical: Human (0.30). ## Pairing & Compatibility ### Typography pairing - Primary: Try softly curved letterforms to echo the rounded shapes. For example, try Plus Jakarta Sans. - Alternative: Try softly curved letterforms to echo the rounded shapes. For example, try Outfit. - Body: Use a lighter weight for supporting text and compare it with the artwork at reading size. For example, try Inter Regular. - Caution: Compare letter shapes and apparent weight before combining a contrasting typeface with the artwork. Examples to compare include IBM Plex Sans. ## Categories - [Interface Essential](/icons/flex-duo/interface-essential) - [Business](/icons/flex-duo/business) - [Images Photography](/icons/flex-duo/images-photography) - [Money Shopping](/icons/flex-duo/money-shopping) - [Programming](/icons/flex-duo/programming) - [Computer Devices](/icons/flex-duo/computer-devices) - [Phone](/icons/flex-duo/phone) - [Mail](/icons/flex-duo/mail) - [Map Travel](/icons/flex-duo/map-travel) - [Food Drink](/icons/flex-duo/food-drink) - [Nature Ecology](/icons/flex-duo/nature-ecology) - [Entertainment](/icons/flex-duo/entertainment) - [Shipping](/icons/flex-duo/shipping) - [Culture](/icons/flex-duo/culture) - [Health](/icons/flex-duo/health) - [Work Education](/icons/flex-duo/work-education) - [Artificial Intelligence](/icons/flex-duo/artificial-intelligence) - [Arrows](/icons/flex-duo/arrows) ## 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-1krlpndnj2q1y6glbg1103.png/3d-perspective-grid-vgosupywiy4gatvknrlut.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-kcc8yaxqm56t83whfj3xu.png/apply-to-all-7htobrgajfwlnw5x054xda.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-dzvtk1k8r877wbah06s0r.png/attach-file-add-ewobwvensirsh729zusyn.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-99c7p7h74fs5h3d2222mij.png/attach-file-off-4jnwigvcj9lahwgg5tsv6.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-mjp2wuo67ba3xq9m011tal.png/auto-fit-column-width-hl7xr24hqpttcw1mmr2rw.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-2ayu5jaa4dbrkqqqqwkxb.png/auto-fit-row-height-k41f0qewwkgs8f3tyuboro.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-3wkzvwhfc8t37oat6eeus.png/auto-save-backup-vk77uwclgghahairz4ceba.png?_a=DATAiZkSZAA0) - [Binder Clip](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/binder-clip-dbefy1uzrrv2fxewm5nw2k.png/binder-clip-xvi14mar3vdp156g9rwpi.png?_a=DATAiZkSZAA0) - [Binoculars](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/binoculars-xu8f1ebmpujwggc2kcdn2g.png/binoculars-sbkj3xeal4diuyiotjnt.png?_a=DATAiZkSZAA0) - [Bomb](https://assets.streamlinehq.com/image/private/w_34,h_34,ar_1/f_auto/v1/icons/edit/bomb-6yrv9leszw7yonm7bmxw2.png/bomb-iudg90axlaw72f5rd21w.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-fb60c.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-df6f3.png?_a=DATAiZkSZAA0) --- [View full sitemap](/sitemap.md)