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+"Shadow Length" (`SHLN` in CSS) is an [axis](/glossary/axis_in_variable_fonts) found in some [variable fonts](/glossary/variable_fonts) that controls the length of a shadow applied to letterforms, allowing one to add depth and dimension to a typeface.
+
+The [Google Fonts CSS v2 API](https://developers.google.com/fonts/docs/css2) defines the axis as:
+
+| Default: | Min: | Max: | Step: |
+| --- | --- | --- | --- |
+| 50 | 0 | 100 | 1 |
+
+
+
+
+
+A letterform from the Honk typeface.
+
+
+Changes along the Shadow Length axis increase or decrease the shadow applied to each letterform. At 0%, the shadow length is zero, while at 100% the shadow reaches the maximum length defined by the typeface’s design. The default value of 50% places the shadow midway between these extremes.
+
+The axis uses a percentage-based scale relative to each family’s design, where 0% produces no shadow and 100% applies the maximum shadow length intended by the type designer.
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+name: "Shadow Length (SHLN)"
+excerpt: "An axis found in some variable fonts that controls the length of the font’s shadow, from no visible shadow to the maximum shadow effect defined by the type designer."
+related_lessons: "introducing_variable_fonts"
+related_lessons: "designing_with_variable_fonts_in_desktop_apps"
+related_lessons: "styling_type_on_the_web_with_variable_fonts"