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(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

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.

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
    RGB

  • Mask Green

    Secondary green and ground for Duo

    HEX
    RGB

  • Eel

    Typography

    HEX
    RGB

  • Snow

    Primary background

    HEX
    RGB

  • Macaw

    Secondary color for UI, illustration and full-bleed backgrounds

    HEX
    RGB

  • Cardinal

    Secondary color for UI, illustration and full-bleed backgrounds

    HEX
    RGB

  • Bee

    Secondary color for UI, illustration and full-bleed backgrounds

    HEX
    RGB

  • Fox

    Secondary color for UI, illustration and full-bleed backgrounds

    HEX
    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.

Duolingo imagery

123 images from duolingo.com, in 5 files of the Brand Skill. Each file starts with its guidance, then shows the images it refers to.

Course imagery

43 images

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.

  • A stylized, flat graphic of the Spanish flag rendered as a rounded rectangle.
  • A flat graphic of the French flag presented in a rounded rectangular format.
  • A minimalist white castle tower icon, resembling a chess rook, is centered within a bright teal rounded rectangle.
  • A vibrant red circle is centered on a light gray rectangular field with softly rounded corners, mirroring the design of the Japanese flag.
  • A flat graphic illustration of the German flag presented as a rounded rectangle.
  • A vibrant blue rounded-square icon featuring four bold, white mathematical symbols arranged in a grid.
  • A minimalist, rounded-rectangle graphic representation of the Indian flag.
  • A graphic illustration of the South Korean flag set within a light grey rectangle with rounded corners.
  • A digital graphic of the Italian flag contained within a rounded rectangle.
  • A flat, stylized graphic of the flag of China with rounded corners, featuring a vibrant red rectangular base.
  • A flat, graphic icon of the Russian flag shaped like a rounded rectangle.
  • A white graphic emblem is centered within a vibrant lime-green rounded square.
  • A minimalist, stylized graphic of the Brazilian flag presented in a rounded rectangular format.
  • A flat, simplified graphic of the Turkish flag design enclosed in a rounded red rectangle.
  • A flat, graphic icon of the Luxembourg flag with rounded corners.
  • A flat, graphic illustration of the Greek national flag, featuring a white cross in the upper-left corner on a sky blue canton.
  • A flat, minimalist icon of the flag of Poland presented in a rounded rectangular shape.
  • A flat, graphic illustration of the Swedish flag rendered as a rounded rectangle.
  • A vibrant yellow five-pointed star with soft, rounded corners is centered on a solid coral-red rectangular background with rounded edges.
  • A vibrant yellow laurel wreath illustration is centered on a flat, coral-red rectangular background with rounded corners.
  • A minimalist graphic representation of the flag of Norway, presented as a rectangular icon with rounded corners.
  • A vibrant graphic of the Irish national flag presented as a square with rounded corners.
  • A flat, rounded-corner graphic of the Israeli flag featuring a light blue Star of David centered on a white field.
  • A flat graphic illustration of the Indonesian flag, presented as a rectangular icon with soft, rounded corners.
  • A minimalist graphic icon of a stylized red dragon head and winding neck against a dark charcoal, rounded rectangular backdrop.
  • A flat graphic illustration of the Ukrainian flag in a rounded rectangular shape.
  • A flat graphic illustration of the Finnish flag contained within a rounded rectangular frame.
  • A flat graphic of the Danish flag, the Dannebrog, designed as a rounded rectangular icon.
  • A flat, graphic illustration of a flag in a rounded rectangular shape, divided into three equal vertical bands of bright blue on the left, golden yellow in…
  • A flat, simplified graphic of the flag of the Czech Republic designed as a rounded rectangle.
  • A vibrant, flat-style graphic of the South African flag presented with rounded corners.
  • A digital graphic of the flag of Hawaii, presented as a rectangular icon with soft, rounded corners.
  • A flat, graphic icon representing the flag of Tanzania, presented with soft, rounded corners in a squat rectangular format.
  • A flat, stylized graphic of the Welsh flag rendered with rounded corners and a minimalist aesthetic.
  • A flat, graphic illustration of the Hungarian flag contained within a rounded rectangular icon shape.
  • A flat graphic of the Scottish flag, known as the Saltire, designed with soft rounded corners.
  • A flat, rounded rectangular graphic divided horizontally into a vibrant blue top half and a coral-red bottom half.
  • A flat, rounded rectangular icon resembling a stylized flag in lime green and light grey.
  • This flat graphic features a dark gray three-pronged arrowhead symbol centered within a pale gray circle.
  • A flat minimalist graphic featuring a dark gray gear-like gear wheel with jagged, star-shaped teeth on its outer and inner edges.
  • A flat graphic icon featuring the Hebrew letter Aleph in a bold, rounded white font centered on a royal blue rectangle with rounded corners.
  • A stylized, flat-design icon of the United States flag with rounded corners.
  • A vibrant purple rounded square serves as the backdrop for a large, white musical eighth note icon.

Product experience imagery

21 images

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.

  • A green owl character peeks over the edge of a mint-green and white checkered game board as white chess pieces explode into the air.
  • A vertical screenshot of a mobile chess learning app interface features a path of green circular icons with stars, a knight, and a rook.
  • A vector illustration of a mobile app interface featuring a chess puzzle.
  • A vertical digital graphic designed for a mobile interface features a cartoon man named Oscar with a thick dark mustache and black hair.
  • A vertical graphic shows a stylized match-up screen within a dark grey smartphone frame.
  • A vibrant 2D illustration features the green Duolingo owl mascot surfing on a blue disc alongside two active human characters.
  • This screenshot of a mobile learning app displays a math equation, '2(x+3) + 3x = 3x + 16', centered on a white interface with a blue border.
  • A digital screen from a math learning app features a colorful flat illustration of a whole pepperoni pizza sliced into six equal parts.
  • A screenshot of a mobile learning app interface for a math lesson titled 'Use exponent rules.' A cartoon guide character in a speech bubble asks to simplify…
  • A vibrant lime green rounded square graphic featuring the numbers "1", "2", and "3" in a playful, hand-drawn font.
  • A vibrant blue square icon with rounded corners features two stylized, minimalist graphics floating in the center.
  • A vibrant orange rounded-square graphic features two stylized icons with soft, rounded corners.
  • A bright red rounded square icon featuring a central, light pink lowercase 'x' rendered in a thick, hand-drawn script.
  • A vibrant purple square icon with rounded corners features two parallel, horizontal white double-headed arrows stacked vertically.
  • A vibrant lime green square icon with rounded corners contains a stylized progress path graphic.
  • A square blue icon with rounded corners features a white, thick, undulating line graph inside.
  • A vibrant orange rounded square icon features a minimalist white outline of a right-angled triangle.
  • A stylized, square-shaped character icon with a vibrant neon color gradient shifting from lime green at the top through electric blue to a hot pink base.
  • A long vertical stack of rounded rectangular icons features stylized national flags and character icons in a bright, flat vector style.
  • A vertical series of light green and white line-art icons arranged in a column.
  • A vibrant, 3D isometric graphic features three floating tokens in a diagonal arrangement against a dark field punctuated by small green diamond shapes.

Marketing imagery

42 images

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.

  • A vibrant 2D illustration featuring the bright green Duolingo owl mascot appearing joyful with outstretched wings.
  • A vibrant green cartoon owl tilts its head cheerfully and waves one wing upward in this flat vector illustration.
  • A vibrant 2D illustration features a cheerful green owl with its wings raised in a celebratory pose.
  • A flat illustration depicts Oscar, a man with a large mustache and pink shirt, gesturing toward a giant smartphone screen that displays four profile icons,…
  • A flat, geometric vector illustration depicts two stylized scientists working with oversized laboratory equipment.
  • A vector illustration of a blonde woman in a red tracksuit and headband running across a series of tilted smartphone screens.
  • This playful 3D isometric illustration features two distinct characters standing atop separate smartphone screens.
  • A dynamic 3D graphic features an array of colorful, isometric floating icons scattered diagonally across the frame.
  • A vibrant, 3D-styled dark purple smartphone icon is angled to the right, featuring a glowing heart emblem at its center.
  • A minimalist 2D illustration featuring a stylized woman with dark skin and a yellow headband standing on top of a giant mobile phone.
  • A vibrant 3D vector illustration features a green smartphone centered among an explosion of gamified rewards against a black and green landscape.
  • A colorful 2D flat illustration depicts a man with a thick dark mustache and eyes closed in concentration, viewed from a low angle.
  • A vibrant 2D illustration features the green Duolingo owl mascot alongside two diverse characters engaged in athletic activities on a blue grid background.
  • A flat vector illustration depicts a muscular woman in a red tracksuit struggling to hold up a horizontal blue X-axis line while two characters leap over it.
  • A vibrant, flat illustration depicts a cartoon character with orange hair and wide eyes looking up in awe at a white smartphone screen.
  • A diverse group of four cheerful, cartoon-style characters are clustered on the left side of a wide, slanted white banner.
  • A vibrant, flat 2D illustration features three diverse characters gathered around a smartphone, celebrating a digital win.
  • A clean, modern bar chart compares proficiency scores for 'Listening' (blue) and 'Reading' (green) across the years 2020, 2023, and 2024.
  • A man with slicked-back blonde hair sits on a gray couch, smiling at the camera while holding a smartphone.
  • A minimalist, flat-style play button icon featuring a solid white triangle with rounded corners.
  • A man wearing glasses and a quilted vest smiles while sitting on a brown sofa in a home office or living room.
  • A woman sits cross-legged on a navy blue sofa with a gray knitted throw, holding a smartphone and looking directly at the camera with a slight smile.
  • A smiling Black woman sits cross-legged on a navy blue window seat, holding a smartphone and looking directly at the camera.
  • A woman with short dark hair smiles warmly while sitting at a polished wooden dining table and holding a phone.
  • A dynamic 2D illustration shows four colorful, stylized characters struggling with a giant, tilted smartphone that displays a French language lesson.
  • A vibrant green cartoon owl with an enthusiastic expression peeks from the bottom of a blue circular frame with a white border.
  • A flat vector illustration of the green Duolingo owl mascot performing a workout against a solid orange circular backdrop.
  • A circular vector illustration features a wide-eyed green owl peering down from the top right corner at a ginger-haired character looking upward from the…
  • A bold, white number "1" is centered inside a solid lime-green circle graphic.
  • A vibrant lime green solid circle acts as the backdrop for a large, bold white number '2' centered in the frame.
  • A bold, white number "3" is centered within a solid, vibrant lime-green circle.
  • A vibrant lime-green solid circle serves as the base for this graphic, containing a large, white numeral "4" centered in the middle.
  • A vibrant 2D vector illustration features four diverse, expressive characters framed within colorful blocks.
  • A diverse group of Duolingo characters and the green owl, Duo, are shown in a dynamic, flat-style 2D illustration.
  • A group of colorful, expressive cartoon characters are shown struggling with a giant, tilted smartphone that displays a language learning app interface.
  • A vibrant lime green panoramic banner features the white Duolingo wordmark centered between a parade of diverse green owl character illustrations.
  • A green Duolingo owl mascot illustration is positioned to the left of the bright green sans-serif text, "Join a mission that brings people together." Below…
  • A wide lime green banner features a parade of eight green Duolingo owl characters in various emotional states and poses.
  • Bold, italicized graphic text features a vibrant horizontal color gradient transitioning from bright green on the left to cyan, blue, and finishing in purple…
  • A bold graphic typographic treatment features the phrase "POWER UP WITH" in slanted, sans-serif white capital letters.
  • A vibrant lime green graphic element designed as a horizontal banner or header.
  • A single, solid lime green graphic element shaped like a horizontal footer or border.

Character imagery

1 image

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.

  • A flat 2D vector illustration features two cartoon characters engaged in a tutoring or parenting moment.

Research imagery

16 images

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.

  • A smiling woman with short auburn hair holds a large pink speech bubble shaped like a cat's head against a plain white background.
  • A close-up portrait of a man with light brown, side-parted hair and blue eyes, smiling warmly to reveal his upper teeth.
  • A middle-aged East Asian woman with glasses and short dark hair smiles warmly in a waist-up studio portrait against a plain cream background.
  • A close-up selfie of a woman with voluminous, dark brown curly hair and striking green eyes looking directly at the camera with a neutral expression.
  • A close-up portrait shows a woman with long, light-brown hair and a gentle smile looking directly into the camera.
  • A close-up portrait of a man with light blue eyes and a dark brown beard looking directly at the camera with a subtle, neutral smile.
  • A close-up selfie captures a man with dark hair and a goatee glancing sideways while holding a bright red mug in a diner setting.
  • A portrait of a woman with long wavy brown hair and glasses, smiling softly while holding a rounded rectangular sign.
  • A headshot-style outdoor photo features a smiling woman with long blonde hair and round wire-frame glasses.
  • A close-up headshot of a smiling man with a full, dark beard, short black hair, and clear-framed glasses against a dark, textured gray background.
  • A woman with long, curly dark brown hair and a bright smile holds a speech bubble sign against a plain dark grey background.
  • A man wearing glasses and a dark Duolingo hoodie holds up a large blue speech bubble sign while looking at it with a skeptical expression against a plain…
  • A man with short brown hair and a light blue striped polo shirt smirks while holding a yellow speech bubble sign against a plain white background.
  • A close-up headshot of a woman with long, wavy brown hair parted in the middle and bright blue eyes.
  • A medium shot of a young man with glasses and short dark hair, wearing a black t-shirt with a small white ghost graphic on the chest.
  • A close-up headshot of a young East Asian man with short, spiky black hair and rectangular wire-frame glasses.

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.

It has the guidance, 133 images and the logos. The font files belong to Duolingo, Inc, so they’re left out.

Download the Brand SkillZIP, 1.7 MB

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/

├ images/

└ logos/

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.

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