Customize appearance
Customize your in-app integration with the Appearance API.
The 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 EmbeddedPaymentElement.Configuration object.
- Customize the font
- Customize colors to match your app
- Customize shapes like corner radius
- Fine-tune specific components
- Customize look and feel of Payment Element
var configuration = EmbeddedPaymentElement.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 = 8 appearance.shadow = .disabled appearance.borderWidth = 0 appearance.selectedBorderWidth = 2 appearance.colors.background = UIColor(red: 23/255, green: 47/255, blue: 86/255, alpha: 1) appearance.colors.primary = UIColor(red: 199/255, green: 217/255, blue: 255/255, alpha: 1) appearance.colors.text = .white appearance.colors.textSecondary = UIColor(red: 255/255, green: 255/255, blue: 255/255, alpha: .7) appearance.colors.componentText = .white appearance.colors.componentPlaceholderText = UIColor(red: 255/255, green: 255/255, blue: 255/255, alpha: .5) appearance.colors.componentBorder = .clear appearance.colors.componentDivider = UIColor(red: 255/255, green: 255/255, blue: 255/255, alpha: .1) appearance.colors.componentBackground = UIColor(red: 44/255, green: 73/255, blue: 119/255, alpha: 1) appearance.colors.icon = .white configuration.appearance = appearance let embeddedPaymentElement = try await EmbeddedPaymentElement.create(/* ... */, 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 = EmbeddedPaymentElement.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. overrides the value of appearance..
Note
Let us know if you think we need to add more customization options.
Payment Element
The Payment Element has the following styles: flat with radio buttons, flat with checkmarks, flat with disclosure icons, and floating buttons. Each style has specific options corresponding to that style.
Flat with radio
var configuration = EmbeddedPaymentElement.Configuration() var appearance = PaymentSheet.Appearance.default appearance.embeddedPaymentElement.row.style = .flatWithRadio appearance.embeddedPaymentElement.row.flat.bottomSeparatorEnabled = false // Hide the bottom separator appearance.embeddedPaymentElement.row.flat.topSeparatorEnabled = false // Hide the top separator appearance.embeddedPaymentElement.row.flat.separatorColor = .gray // Change the separator color to gray appearance.embeddedPaymentElement.row.flat.separatorInsets = .zero // Make separators full width appearance.embeddedPaymentElement.row.flat.separatorThickness = 2.0 // Increase separator thickness to 2 appearance.embeddedPaymentElement.row.flat.radio.selectedColor = .blue // Change color of radio button when selected to blue appearance.embeddedPaymentElement.row.flat.radio.unselectedColor = .darkGray // Change color of radio button when unselected to darkGray configuration.appearance = appearance
Flat with checkmark
var configuration = EmbeddedPaymentElement.Configuration() var appearance = PaymentSheet.Appearance.default appearance.embeddedPaymentElement.row.style = .flatWithCheckmark appearance.embeddedPaymentElement.row.flat.bottomSeparatorEnabled = false // Hide the bottom separator appearance.embeddedPaymentElement.row.flat.topSeparatorEnabled = false // Hide the top separator appearance.embeddedPaymentElement.row.flat.separatorColor = .gray // Change the separator color to gray appearance.embeddedPaymentElement.row.flat.separatorInsets = .zero // Make separators full width appearance.embeddedPaymentElement.row.flat.separatorThickness = 2.0 // Increase separator thickness to 2 appearance.embeddedPaymentElement.row.flat.checkmark.color = .blue // Change color of the checkmark configuration.appearance = appearance
Flat with disclosure
The FlatWithDisclosure style requires you to set the immediateAction row selection behavior. After the customer selects a payment method, move them to a new screen (for example, back to your main checkout screen) because the row of their selected payment method won’t appear selected.
var configuration = EmbeddedPaymentElement.Configuration() // The flatWithDisclosure style requires the .immediateAction row selection behavior, which accepts a handler for a user selecting a payment method. configuration.rowSelectionBehavior = .immediateAction(didSelectPaymentOption: myHandlingFunction) var appearance = PaymentSheet.Appearance.default appearance.embeddedPaymentElement.row.style = .flatWithDisclosure appearance.embeddedPaymentElement.row.flat.bottomSeparatorEnabled = false // Hide the bottom separator appearance.embeddedPaymentElement.row.flat.topSeparatorEnabled = false // Hide the top separator appearance.embeddedPaymentElement.row.flat.separatorColor = .gray // Change the separator color to gray appearance.embeddedPaymentElement.row.flat.separatorInsets = .zero // Make separators full width appearance.embeddedPaymentElement.row.flat.separatorThickness = 2.0 // Increase separator thickness to 2 appearance.embeddedPaymentElement.row.flat.disclosure.color = .black // Change color of the disclosure icon configuration.appearance = appearance
Floating button
var configuration = EmbeddedPaymentElement.Configuration() var appearance = PaymentSheet.Appearance.default appearance.embeddedPaymentElement.row.style = .floatingButton appearance.embeddedPaymentElement.row.floating.spacing = 20 // Increase spacing appearance.embeddedPaymentElement.row.additionalInsets = 10 // Increase row height configuration.appearance = appearance
Common row customizations
You can customize row properties that apply across all row styles:
var configuration = EmbeddedPaymentElement.Configuration() var appearance = PaymentSheet.Appearance.default appearance.embeddedPaymentElement.row.additionalInsets += 1 // Increase row height by 1 point appearance.embeddedPaymentElement.row.paymentMethodIconLayoutMargins = .init(top: 0, leading: 10, bottom: 0, trailing: 10) // Custom margins for the payment method icon (e.g. the Klarna logo) appearance.embeddedPaymentElement.row.titleFont = UIFont.systemFont(ofSize: 16, weight: .medium) // Custom font for the row title (e.g. "Klarna") appearance.embeddedPaymentElement.row.subtitleFont = UIFont.systemFont(ofSize: 14, weight: .medium) // Custom font for the row subtitle (e.g. "Buy now or pay later with Klarna")