Customize appearance

Customize your mobile integration with the Appearance API.

The mobile Payment Element supports visual customization, which allows you to match the design of your app. The layout stays consistent, but you can modify colors, fonts, and more by using the appearance property on your PaymentSheet.Configuration object.

Start by customizing the font
Customize colors to match your app
Customize shapes like corner radius
Fine-tune specific components

var configuration = PaymentSheet.Configuration()
// The following code creates the appearance shown in the screenshot above
var appearance = PaymentSheet.Appearance()
appearance.font.base = UIFont(name: "AvenirNext-Regular", size: UIFont.systemFontSize)!
appearance.cornerRadius = 12
appearance.shadow = .disabled
appearance.borderWidth = 0.5
appearance.colors.background = .white
appearance.colors.primary = UIColor(red: 36/255, green: 36/255, blue: 47/255, alpha: 1)
appearance.colors.textSecondary = .black
appearance.colors.componentPlaceholderText = UIColor(red: 115/255, green: 117/255, blue: 123/255, alpha: 1)
appearance.colors.componentText = .black
appearance.colors.componentBorder = .clear
appearance.colors.componentDivider = UIColor(red: 195/255, green: 213/255, blue: 200/255, alpha: 1)
appearance.colors.componentBackground = UIColor(red: 243/255, green: 248/255, blue: 250/247, alpha: 1)
appearance.primaryButton.cornerRadius = 20
configuration.appearance = appearance
let paymentSheet = PaymentSheet(/* ... */, configuration: configuration)

Fonts

Customize the font by setting font.base to any variant of your custom font at any size and weight. The mobile Payment Element uses the font family of your custom font, but determines sizes and weights itself.

To increase or decrease the size of all text, set font.sizeScaleFactor. We multiply font sizes by this value before displaying them. This is useful if your custom font is slightly larger or smaller than the system font.

var configuration = PaymentSheet.Configuration()
configuration.appearance.font.base = UIFont(name: "CustomFont-Regular", size: UIFont.systemFontSize)
configuration.appearance.font.sizeScaleFactor = 1.15 // Increase the size of all text by 1.15x

Colors

Customize the colors in the mobile Payment Element by modifying the color categories defined in Appearance.Colors. Each color category determines the color of one or more components in the UI. For example, primary defines the color of the Pay button and selected items like the Save this card checkbox. Refer to the diagram below to see some of the UI elements associated with each color category.

Note

To support dark mode, initialize your custom UIColors with init(dynamicProvider:).

Shapes

Besides fonts and colors, you can also customize the corner radius, border width, and shadow used throughout the mobile Payment Element.

Specific UI components

The sections above describe customization options that affect the mobile Payment Element broadly, across multiple UI components. We also provide customization options specifically for the primary button (for example, the Pay button). Refer to Appearance.PrimaryButton for the full list of customization options.

Customization options for specific UI components take precedence over other values. For example, appearance.primaryButton.cornerRadius overrides the value of appearance.cornerRadius.

Note

Let us know if you think we need to add more customization options.