Roboto Slab and Roboto Flex font pairing
Serif headings with a sans serif body.
Good pairings feel inevitable. Great ones set the tone before a single word is read.
Typography sets the tone before a single word is read. A strong pairing creates clear hierarchy while feeling like one consistent voice across every page. This paragraph is set in Roboto Flex, while the headline uses Roboto Slab. Numbers like 0123456789, punctuation “quotes” — and ampersands & — reveal a lot about how two typefaces get along.
Look for contrast in structure and harmony in proportion: similar x-heights, compatible widths and a shared sense of rhythm. Bold text and italic text should feel natural, too.
Why this pairing works
A classic contrast: Roboto Slab's serifs give headlines an editorial, trustworthy voice while Roboto Flex's clean shapes keep body text easy to scan on screens. Roboto Flex ships in 10 weights, so you can build captions, buttons and emphasis without adding another family.
HRoboto Slab
Roboto Slab is a free slab serif typeface designed by Christian Robertson, added to Google Fonts in 2013. It comes in 9 weights, and is a variable font with a weight axis.
More pairings for Roboto Slab →BRoboto Flex
Roboto Flex is a free sans serif typeface designed by Font Bureau, David Berlow, Santiago Orozco, Irene Vlachou, Ilya Ruderman, Yury Ostromentsky and Mikhail Strukov, added to Google Fonts in 2022. It comes in 10 weights, and is a variable font with grade, XOPQ, x-transparency, YOPQ, YTAS, YTDE, YTFI, YTLC, YTUC, optical size, slant, width and weight axes.
More pairings for Roboto Flex →Use this pairing on your website
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Roboto+Slab:wght@700&family=Roboto+Flex:wght@400;700&display=swap" rel="stylesheet">h1, h2, h3 {
font-family: 'Roboto Slab', serif;
font-weight: 700;
}
body {
font-family: 'Roboto Flex', sans-serif;
font-weight: 400;
line-height: 1.6;
}More pairings with Roboto Slab
Typography sets the tone before a single word is read. A good pairing feels like one voice.
Slab headings add weight and personality while sharing Roboto’s underlying skeleton.
Typography sets the tone before a single word is read. A good pairing feels like one voice.
A classic contrast: Roboto Slab's serifs give headlines an editorial, trustworthy voice while Rubik's clean shapes keep body text easy to scan on screens.
Typography sets the tone before a single word is read. A good pairing feels like one voice.
A classic contrast: Roboto Slab's serifs give headlines an editorial, trustworthy voice while Poppins's clean shapes keep body text easy to scan on screens.
More pairings with Roboto Flex
Typography sets the tone before a single word is read. A good pairing feels like one voice.
A classic contrast: Lora's serifs give headlines an editorial, trustworthy voice while Roboto Flex's clean shapes keep body text easy to scan on screens.
Typography sets the tone before a single word is read. A good pairing feels like one voice.
A classic contrast: Playfair Display's serifs give headlines an editorial, trustworthy voice while Roboto Flex's clean shapes keep body text easy to scan on screens.
Typography sets the tone before a single word is read. A good pairing feels like one voice.
A modern twist on the classic: Roboto Flex keeps headings crisp and contemporary, while Source Serif 4's serifs guide the eye along longer lines of text.
Frequently asked questions
Do Roboto Slab and Roboto Flex go well together?
A classic contrast: Roboto Slab's serifs give headlines an editorial, trustworthy voice while Roboto Flex's clean shapes keep body text easy to scan on screens. Roboto Flex ships in 10 weights, so you can build captions, buttons and emphasis without adding another family.
Which font should be used for headings?
Use Roboto Slab for headings at weight 700, and Roboto Flex for body text at weight 400. You can swap them in the pairing tool to compare.
Are Roboto Slab and Roboto Flex free?
Yes — both are open-source fonts on Google Fonts and free for personal and commercial use.