Use the Filled variant on forms with only 1 or 2 fields that need to stand out visually

Label optional fields. See: https://www.figma.com/file/eGmDp94FlqEr4iSqy1Uc1K/Paragon-2021?node-id=5234%3A3629

Label required fields, label optional fields instead

Use the Dark or Filled variants on validated forms

Use the Filled variant on forms with more than 2 fields

Labels

Labels should initially appear within the text field, then animate to the outside on focus.

Focus Management Expectations

Semantics

Using color to add meaning only provides a visual indication, which will not be conveyed to users of assistive technologies – such as screen readers. Ensure that information denoted by the color is either obvious from the content itself (e.g. the visible text), or is included through alternative means, such as additional text hidden with the .sr-only class.