--- title: "Duolingo brand guidelines: logo, colors and fonts" description: "Duolingo’s logo, colors (#58CC02, #89E219, #4B4B4B), fonts (Feather, DIN Next Rounded), voice, and dos and don’ts, with a Brand Skill for your agents." url: "https://www.rainbrand.com/brand-guidelines/duolingo/" --- (Brand guidelines) // Education # Duolingo brand guidelines Duolingo’s logo, colors, fonts, voice, and dos and don’ts, from the Brand Skill Rainbrand built from duolingo.com. [Download the Brand Skill](https://www.rainbrand.com/brand-guidelines/duolingo/duolingo-brand-skill.zip) ![Duolingo wordmark in white](https://www.rainbrand.com/_next/image?url=%2Fbrand-guidelines%2Fduolingo%2Fduolingo-wordmark-2.svg&w=3840&q=75&dpl=dpl_8zv7npXJR9sMH7dgRdivLL1jQMCy) - Feather Green #58CC02 - Mask Green #89E219 - Eel #4B4B4B - Snow #FFFFFF ## About Duolingo Duolingo is a global learning brand that makes education feel fun, approachable, and effective. Its identity pairs a bright, friendly spirit with bite-sized learning, playful characters, and a focus on research-backed progress. ## Duolingo logo - ![Duolingo wordmark in white](https://www.rainbrand.com/_next/image?url=%2Fbrand-guidelines%2Fduolingo%2Fduolingo-wordmark-2.svg&w=3840&q=75&dpl=dpl_8zv7npXJR9sMH7dgRdivLL1jQMCy) Wordmark · SVG [Download Duolingo wordmark in white](https://www.rainbrand.com/brand-guidelines/duolingo/duolingo-wordmark-2.svg) - ![Duolingo logo with Duo in Feather Green](https://www.rainbrand.com/_next/image?url=%2Fbrand-guidelines%2Fduolingo%2Fduolingo-wordmark.svg&w=3840&q=75&dpl=dpl_8zv7npXJR9sMH7dgRdivLL1jQMCy) Lockup · SVG [Download Duolingo logo with Duo in Feather Green](https://www.rainbrand.com/brand-guidelines/duolingo/duolingo-wordmark.svg) Use the lowercase duolingo logotype as the brand signature, in Feather Green, white or gray only. Its custom letterforms come from Duo: the flick on the g mirrors his eyebrows. Keep clear space around it and never use it below its minimum size. The lockup that places Duo beside the logotype helps where Duo’s recognizability aids brand awareness, such as press, events and partner spaces. Keep Duo and the logotype at their fixed distance, and never let Duo touch or sit on the logotype. ## Duolingo colors - Feather Green Core brand color HEX #58CC02 Copy HEX RGB 88, 204, 2 Copy RGB - Mask Green Secondary green and ground for Duo HEX #89E219 Copy HEX RGB 137, 226, 25 Copy RGB - Eel Typography HEX #4B4B4B Copy HEX RGB 75, 75, 75 Copy RGB - Snow Primary background HEX #FFFFFF Copy HEX RGB 255, 255, 255 Copy RGB - Macaw Secondary color for UI, illustration and full-bleed backgrounds HEX #1CB0F6 Copy HEX RGB 28, 176, 246 Copy RGB - Cardinal Secondary color for UI, illustration and full-bleed backgrounds HEX #FF4B4B Copy HEX RGB 255, 75, 75 Copy RGB - Bee Secondary color for UI, illustration and full-bleed backgrounds HEX #FFC800 Copy HEX RGB 255, 200, 0 Copy RGB - Fox Secondary color for UI, illustration and full-bleed backgrounds HEX #FF9600 Copy HEX RGB 255, 150, 0 Copy RGB ## Duolingo fonts - Feather Headlines · 700 - DIN Next Rounded Body, sub-headings and headlines of 10 words or more · 400 Font names only. The Brand Skill download doesn’t include font files. ## Duolingo’s voice Write with cheerful confidence and make learning feel achievable. Duolingo’s voice is expressive, playful, embracing and worldly; the tone adapts to how the audience feels, but always stays clear, human and relaxed. Keep writing short and use words everyone understands. - “Everyone can Duolingo” - “Language belongs to everyone. With Duolingo, so does language learning” - “We put the fun in language fundamentals” - “Duolingo is the world’s #1 way to learn a language” ## Dos and don’ts ### Do - Lean in to Feather Green; it is the color the world associates with Duolingo. - Set Feather headlines in lowercase and left-aligned, and switch to DIN Next Rounded once a headline runs past 10 words. - Pair energetic, playful language with clear explanations of what learners can do and achieve. - Build illustrations from rounded rectangles, circles and rounded triangles. ### Don’t - Don’t recreate the logotype in another font, skew it, or change its spacing or proportions; only 0° and 90° rotations are allowed. - Don’t combine Feather and DIN Next Rounded in the same sentence. - Don’t use humor or playfulness in a way that belittles learners or their mistakes. - Don’t present learning claims as stronger or more universal than the research supports. ## More from the Brand Skill ### Course imagery Course artwork helps learners recognize subjects and courses at a glance. Keep each course image associated with its intended subject and preserve the recognizable visual treatment when using it in course discovery, navigation, or learning materials. ### Product experience imagery Use Duolingo’s product imagery to show learning in action: clear screens, approachable lessons, step-by-step help, and visible progress. Preserve the appearance of Duolingo’s own app and learning experiences when creating product-focused work. Keep interface imagery legible and use it in a context that makes its purpose clear. ### Marketing imagery Duolingo’s marketing imagery brings learning to life through bright, expressive scenes, bold shapes, and playful character moments. Use this approach for the brand’s own campaigns and storytelling. Keep product-specific or campaign-specific art in its original context when adapting the visual approach. ### Character imagery Duolingo’s characters bring warmth and personality to learning stories. Use expressive poses and interactions to make educational moments feel lively and encouraging. Keep the characters recognizable and use character art in ways that support the learning context rather than overpowering it. ### Research imagery Use researcher portraits in research and team contexts, alongside accurate names and professional information. These portraits support editorial presentation of Duolingo’s research team; they are not general-purpose campaign art. ## Download Duolingo’s Brand Skill A Brand Skill is a folder of brand guidance written for agents. Give it to Claude, ChatGPT, Cursor or another agent and ask it to follow Duolingo’s guidelines. It starts at SKILL.md, which points to the right file for each task. This copy includes the guidance and logos. It leaves out the reference images and font files. [Download the Brand Skill](https://www.rainbrand.com/brand-guidelines/duolingo/duolingo-brand-skill.zip) duolingo-brand-skill/ ├ SKILL.md ├ README.md ├ references/ │ ├ dos-and-donts.md │ ├ color.md │ ├ logo.md │ ├ typography.md │ ├ voice.md │ ├ course-imagery.md │ ├ product-experience-imagery.md │ ├ marketing-imagery.md │ ├ character-imagery.md │ └ research-imagery.md └ assets/logos/ ├ duolingo-wordmark-2.svg └ duolingo-wordmark.svg Rainbrand’s Brand Agent built this Brand Skill from duolingo.com on 30 Oct 2026. It isn’t Duolingo’s official guide. Reviewed by Siddharth Borderwala, Founding Engineer at Rainbrand. Duolingo and its logos are trademarks of Duolingo, Inc. Rainbrand isn’t affiliated with or endorsed by Duolingo, Inc. ## Make one for your brand. Add Rainbrand to your agent and give it your website, brand guide or files. Rainbrand builds a Brand Skill like this one and keeps it up to date. [Get started](https://www.rainbrand.com/auth/sign-in) [Read the docs](https://docs.rainbrand.com/mcp/getting-started) ### ChatGPT + Codex 1. Open the Rainbrand plugin and add it. [Open Rainbrand plugin](https://chatgpt.com/plugins/plugin_asdk_app_6ac6e5030ec88191a88001f6dc0628ca) 2. Connect your Rainbrand account when asked. It works in ChatGPT and in Codex. ### Claude 1. Open the Rainbrand connector in Claude and add it. [Open Rainbrand connector](https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Rainbrand&connectorUrl=https%3A%2F%2Fmcp.rainbrand.com%2Fmcp) 2. Select Connect, then sign in to Rainbrand. You can also install the [Rainbrand Skill](https://docs.rainbrand.com/mcp/getting-started#standalone-rainbrand-skill) or the [plugin](https://github.com/rainbrandai/rainbrand-skills/releases/latest/download/rainbrand.claude-plugin.zip). ### Claude Code 1. Add Rainbrand's plugin marketplace in your terminal. ``` claude plugin marketplace add rainbrandai/rainbrand-skills ``` 2. Install the Rainbrand plugin, including its Skill and MCP connection. ``` claude plugin install rainbrand@rainbrand ``` 3. Start a new Claude Code session, then use /mcp to sign in to Rainbrand. You can also [connect with MCP](https://docs.rainbrand.com/mcp/getting-started#claude-code-installation-options) or install the [Rainbrand Skill](https://docs.rainbrand.com/mcp/getting-started#standalone-rainbrand-skill). ### Cursor 1. Add Rainbrand to ~/.cursor/mcp.json. ``` { "mcpServers": { "rainbrand": { "url": "https://mcp.rainbrand.com/mcp" } } } ``` 2. Sign in from the Cursor CLI. ``` agent mcp login rainbrand ``` You can also install the [Rainbrand Skill](https://docs.rainbrand.com/mcp/getting-started#standalone-rainbrand-skill) or the [plugin](https://github.com/rainbrandai/rainbrand-skills/releases/latest/download/rainbrand.cursor-plugin.zip). ### API 1. Create an API key in your account settings, then list your brands. ``` curl https://www.rainbrand.com/api/v1/brands -H "x-api-key: $RAINBRAND_API_KEY" ``` Integrating Rainbrand into your app? [Read the API docs](https://docs.rainbrand.com/api). ## More brand guidelines [See all brands](https://www.rainbrand.com/brand-guidelines/) - [Airbnb brand guidelines](https://www.rainbrand.com/brand-guidelines/airbnb/) Travel and transport - [Alo Yoga brand guidelines](https://www.rainbrand.com/brand-guidelines/alo-yoga/) Sports and outdoors - [Apple brand guidelines](https://www.rainbrand.com/brand-guidelines/apple/) Consumer technology The brand layer for agents. Rainbrand builds and maintains shared brand context for your agents and products. [Get started](https://www.rainbrand.com/auth/sign-in) [Read the docs](https://docs.rainbrand.com/)