Fluent UI Core - Typography
Fabric includes 10 base font classes that represent the type ramp for the Office Design Language. Each base class sets a default size, weight, and color.
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ms-font-su
42px
Segoe UI Light
ms-color-neutralPrimary
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ms-font-xxl
28px
Segoe UI Light
ms-color-neutralPrimary
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ms-font-xl-plus
24px
Segoe UI Light
ms-color-neutralPrimary
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ms-font-xl
21px
Segoe UI Light
ms-color-neutralPrimary
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ms-font-l
17px
Segoe UI Semilight
ms-color-neutralPrimary
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ms-font-m-plus
15px
Segoe UI Regular
ms-color-neutralPrimary
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ms-font-m
14px
Segoe UI Regular
ms-color-neutralPrimary
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ms-font-s-plus
13px
Segoe UI Regular
ms-color-neutralPrimary
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ms-font-s
12px
Segoe UI Regular
ms-color-neutralPrimary
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ms-font-xs
11px
Segoe UI Regular
ms-color-neutralPrimary
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ms-font-mi
10px
Segoe UI Semibold
ms-color-neutralPrimary
Font weight
Use these classes to set the font weight, independent of its size and color.
Class
Weight
ms-fontWeight-light
Light
ms-fontWeight-semilight
Semilight
ms-fontWeight-regular
Regular
ms-fontWeight-semibold
Semi Bold
ms-fontWeight-bold
Bold
Font size
Use these classes to set the font size, independent of its weight and color.
Class
Size
Alternative fonts
Usage of Fabric's default web font, Segoe UI, is subject to the assets license. If your app does not meet these requirements, you can substitute another font in place of Segoe UI. There are two methods available:
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Use Selawik, an open source alternative to Segoe UI from Microsoft. With support for this font built-in to Fabric, it's as simple as applying an additional class to the root "ms-Fabric" class that wraps your application. If Segoe UI is not installed on the user's system, Selawik will be used instead.
<div class="ms-Fabric ms-Fabric--selawik">...</div>This text is now in Selawik.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla semper leo a elit malesuada scelerisque. Nam et accumsan nibh. Nulla facilisi. Nulla commodo vestibulum lobortis. Mauris interdum vitae mi a blandit. Duis odio mi, gravida et velit sit amet, pulvinar porta magna. Ut fermentum erat tortor, eu bibendum felis laoreet vel. Nulla vitae erat lacinia, mollis felis id, mollis risus. Integer in metus lacus. Ut ac ligula nunc. Vivamus sed lacinia ante.
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Specify a custom font for your application. This can be a commonly-installed local font, such as Helvetica, or a web font that you have included a @font-face declaration for.
.ms-Fabric { font-family: Helvetica, Arial, sans-serif; }This text is now in Helvetica.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla semper leo a elit malesuada scelerisque. Nam et accumsan nibh. Nulla facilisi. Nulla commodo vestibulum lobortis. Mauris interdum vitae mi a blandit. Duis odio mi, gravida et velit sit amet, pulvinar porta magna. Ut fermentum erat tortor, eu bibendum felis laoreet vel. Nulla vitae erat lacinia, mollis felis id, mollis risus. Integer in metus lacus. Ut ac ligula nunc. Vivamus sed lacinia ante.