Font Pairing / Designer Preview
Kelly Slab has a Libre Barcode 39 Extended Text character, while Modern, Clean brings a Modern, Professional role to the page. Their difference creates hierarchy without requiring heavy decoration or extra visual effects.
The strongest use of Kelly Slab is often in display moments, where its personality can be seen quickly. Libre Barcode 39 Extended Text then gives paragraphs and interface copy a steadier rhythm.
Typography Playground
Change the type scale, weights, spacing and sample copy to see how the pairing behaves in a real layout.
Typography Specimen
From headlines and paragraphs to navigation, buttons, captions and quotes, this specimen shows how the two typefaces can build a complete visual language.
Kelly Slab × Libre Barcode 39 Extended Text / type relationship
Place Kelly Slab where readers should look first and Libre Barcode 39 Extended Text where they need to slow down and absorb information. The result is a practical hierarchy that remains recognizably tied to the same pairing.
Kelly Slab and Libre Barcode 39 Extended Text do not need to compete. Their roles become clearer when the first face is reserved for headlines and statements while the second handles paragraphs, labels and secondary information.
Read the story →For identity work, Kelly Slab can become the recognizable headline voice while Libre Barcode 39 Extended Text supplies consistency across supporting applications.
“Use Kelly Slab to attract attention; use Libre Barcode 39 Extended Text to keep it.”— Design principle / 2026
Real-world templates
Use practical layouts to judge the relationship between the heading and body faces before you commit to a design direction.
The hierarchy here is intentionally simple: Kelly Slab takes the prominent role and Libre Barcode 39 Extended Text handles the supporting message so the layout stays expressive without becoming difficult to scan.
Explore this pairing →Kelly Slab gives the headline a distinct presence, while Libre Barcode 39 Extended Text makes the supporting message easier to navigate.
Use Kelly Slab for the project voice and Libre Barcode 39 Extended Text for the details that help visitors understand the work.
A confident headline face can give a brand a signature. A calmer body face keeps the system useful across packaging, web and editorial content.
Explore the collectionA simple hierarchy that lets Kelly Slab create the hook and Libre Barcode 39 Extended Text carry the supporting thought.
Pairing guide
The relationship between Kelly Slab and Libre Barcode 39 Extended Text is built around role separation: Kelly Slab can attract attention, while Libre Barcode 39 Extended Text keeps supporting information clear across editorial layouts, portfolios, brand pages and digital content.
Modern, Clean paired with Modern, Professional creates a balanced starting point. The combination becomes more convincing when Kelly Slab handles the strongest moments and Libre Barcode 39 Extended Text carries the longer reading passages.
This pairing is especially suitable for editorial layouts, portfolios, brand pages and digital content. Start with a clear heading-to-body hierarchy, then adjust size, weight and spacing to match the project.
Keep Kelly Slab visually distinct from Libre Barcode 39 Extended Text rather than matching their sizes too closely. A noticeable hierarchy helps the pairing communicate structure without making the page feel fragmented.
Test Kelly Slab in headlines, navigation or key statements and Libre Barcode 39 Extended Text in paragraphs, descriptions and metadata. Check the relationship at both large display sizes and comfortable reading sizes.
Frequently asked questions
Kelly Slab and Libre Barcode 39 Extended Text currently score 70.1/100, classified as Good match. The score is a design-oriented starting point; use the live preview to confirm the visual result for your project.
Kelly Slab is assigned the Heading role in this pairing. Its job is to create the strongest visual entry point, while Libre Barcode 39 Extended Text supports the body and secondary information.
Libre Barcode 39 Extended Text is assigned the Body role. Use it for paragraphs, descriptions, captions and other text that needs a steady reading rhythm.
The pairing is suited to editorial layouts, portfolios, brand pages and digital content. Its usefulness comes from keeping the two typefaces in complementary roles rather than asking them to perform identically.
Start with a clear size and weight contrast, then tune line-height and letter-spacing. Compare the pairing in headlines, long-form text and interface elements before finalizing the system.
Complete pairing experience
Modern, Clean paired with Modern, Professional creates a balanced starting point. editorial layouts, portfolios, brand pages and digital content.
Use Kelly Slab for the primary role and Libre Barcode 39 Extended Text for supporting content, then refine sizes, weights and spacing for your project.
h1, h2, h3 { font-family: 'Kelly Slab', Arial, sans-serif; }
body, p { font-family: 'Libre Barcode 39 Extended Text', Arial, sans-serif; }Good match
A weighted assessment of contrast, harmony, readability, style, weight balance, use case and popularity.
Good confidence: most of the signals used by the engine are well supported.
Designer read
Weight Balance is excellent. The overall score combines all seven signals using their published weights.
Measures whether the two fonts create enough visual difference to establish hierarchy without feeling disconnected.
Measures how naturally the two typefaces relate in proportion, character and family combination.
Measures how suitable the selected body font is for comfortable reading alongside the heading font.
Measures whether the personalities of the two fonts support the same visual direction.
Measures the balance of typographic thickness and hierarchy between heading and body roles.
Measures how practical the pairing is for common design contexts such as websites, editorial layouts and branding.
Uses available source popularity data as a small supporting signal; it is never the main reason a pair is recommended.
The overall score is a weighted average of seven design signals. Each signal is scored from 0–100 and multiplied by its contribution weight. Confidence is separate: it describes the strength of the evidence behind those signals.