IosButtonStyleHierarchy [fact] v1.0.0

iOS defines four button style roles with distinct visual weights: .borderedProminent for primary CTA, .bordered for secondary actions, .borderless for tertiary inline actions, and role: .destructive (red tint) for delete/remove actions.

Evidence

• .borderedProminent: filled background, highest visual weight — one per screen, primary call-to-action.
• .bordered: outlined or lightly filled — secondary and supporting actions.
• .borderless: no frame, lowest weight — tertiary, inline, or supplementary actions.
• role: .destructive: red tint applied to any style — delete, remove, or irreversible actions.
• Using multiple .borderedProminent buttons on one screen creates ambiguity about the primary action.

IosButtonStyleHierarchy [fact] v1.0.0

iOS defines four button style roles with distinct visual weights: .borderedProminent for primary CTA, .bordered for secondary actions, .borderless for tertiary inline actions, and role: .destructive (red tint) for delete/remove actions.

Evidence

• .borderedProminent: filled background, highest visual weight — one per screen, primary call-to-action.
• .bordered: outlined or lightly filled — secondary and supporting actions.
• .borderless: no frame, lowest weight — tertiary, inline, or supplementary actions.
• role: .destructive: red tint applied to any style — delete, remove, or irreversible actions.
• Using multiple .borderedProminent buttons on one screen creates ambiguity about the primary action.

Evidence

• .borderedProminent: filled background, highest visual weight — one per screen, primary call-to-action.
• .bordered: outlined or lightly filled — secondary and supporting actions.
• .borderless: no frame, lowest weight — tertiary, inline, or supplementary actions.
• role: .destructive: red tint applied to any style — delete, remove, or irreversible actions.
• Using multiple .borderedProminent buttons on one screen creates ambiguity about the primary action.