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An official website of the United States government

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Design System

An official website of the United States government

Here's how you know

Theme:

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What's new?

View code on GitHub

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Version:

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Masked Field

A masked field is an enhanced input field that improves readability by providing visual and non-visual cues to a user about the expected value.

GithubStorybook logoStorybook

Examples

A Mask component renders a controlled input field that applies formatting to the input value when the field is blurred.

Code

React

Passing a mask prop into the TextField component with a valid value will enable formatting to occur when the field is blurred. To "unmask" the value, you can import and call the unmaskValue method.

Review Storybook for React guidance of this component.

Style customization

The following CSS variables can be overridden to customize Input/Form components:

CSS variables for text-input
VariableDefault Core Theme Value
--text-input__background-color--disabledhex value: #d9d9d9--color-gray-lighter
--text-input__border-width2px
--text-input__border-width--disabled2px
--text-input__border-width--error3px
--text-input__border-colorhex value: #262626--color-base
--text-input__border-color--disabledhex value: #a6a6a6--color-gray-light
--text-input__border-color--errorhex value: #e31c3d--color-error
--text-input__border-color--error--inversehex value: #f7bbc5--color-error-lighter
--text-input__border-color--inversehex value: #000000--color-black
--text-input__border-radius--radius-default
--text-input__colorhex value: #262626--color-base
--text-input__divider-colorhex value: #a6a6a6--color-gray-light
--text-input__padding--spacer-1
--text-input__line-height1.2999999523162842
--text-input-currency-icon__line-height--text-input__line-height
--text-input-currency-icon__spacing20px

Form components

This component uses a text field and its styles, which can be customized by the following variables:

CSS variables for form
VariableDefault Core Theme Value

Component maturity

For more information about how we tested and validated our work for each checklist item, read our component maturity documentation.

Accessibility

  • Color

    Meets AA color contrast standards for accessibility and color blindness.
    Complete

  • Forced Colors Mode (FCM)

    While using FCM the components text is legible and improves readability.
    Complete

  • WCAG 2.1 Level AA Conformance

    All Axe checks for WCAG AA compliance have passed.
    Complete

  • Screen readers

    VoiceOver, NVDA, and JAWS screen readers provide concise communication and interaction.
    Incomplete

  • Keyboard navigation

    Component is fully navigable with a keyboard.
    Complete

Code

  • Storybook

    Component has stories to cover all defined props.
    Complete

  • Responsive

    Component designed to work in all responsive breakpoints.
    Complete

  • Spanish translations

    Includes Spanish translations for default text content.
    Not applicable

Tokens

  • Code

    Tokens implemented in code.
    Complete

  • Design

    Tokens implemented in the Sketch.
    Complete

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