Knowledge is a Flat icon from the Plastic Pollution pack, filed under ecology and environment. Its palette is built on orange and red. It suits websites, presentations, infographics, blog posts and social media graphics about ecology and environment. The same knowledge icon is also available in 4 other styles, shown below. Download it free as SVG or as a PNG at any size, copy it as a React or Vue component, or open it in the editor to change its colors, stroke and background. Related searches: book icon, learning icon, learn icon, open book icon.