Knowledge Lightbulb Book color outline icon
Outline icon of a lightbulb glowing above a closed book, representing knowledge
About the Knowledge Lightbulb Book color outline icon
This icon pairs a glowing lightbulb, its rays fanning out in short diagonal lines, with a closed book drawn in a thick wedge shape below it. Together they represent knowledge, ideas, and learning, making it useful for e-learning platforms, course cards, blog headers, and training presentations.
The bulb sits centered on the book's spine with a bracketed filament base and light rays on both sides, while the book's angled edge suggests stacked pages. It pairs well with education, brain, and study icons; use it where 'knowledge' or 'insight' needs a visual anchor.
This is the colour outline version of the knowledge lightbulb book icon: the same line drawing in an accent colour, useful for highlighting a state, a category or a brand tone without adding visual weight.
It downloads free as an SVG vector or transparent PNG in seven sizes, and the free online editor lets you recolor it, apply gold, silver, neon and gradient styles, add animation, or convert it to EPS, PDF and DXF.
Free for personal and commercial use with attribution.
