<!--
{
  "availability" : [
    "iOS: 18.0.0 -",
    "iPadOS: 18.0.0 -",
    "macCatalyst: 18.0.0 -",
    "macOS: 15.0.0 -",
    "tvOS: 18.0.0 -",
    "visionOS: 2.0.0 -",
    "watchOS: 11.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "SwiftUI",
  "identifier" : "/documentation/SwiftUI/GraphicsContext/Filter/alphaMultiply(_:)",
  "metadataVersion" : "0.1.0",
  "role" : "Type Method",
  "symbol" : {
    "kind" : "Type Method",
    "modules" : [
      "SwiftUI"
    ],
    "preciseIdentifier" : "s:7SwiftUI15GraphicsContextV6FilterV13alphaMultiplyyAeA5ColorVFZ"
  },
  "title" : "alphaMultiply(_:)"
}
-->

# alphaMultiply(_:)

Returns a filter that multiplies the alpha component by
a given color.

```
static func alphaMultiply(_ color: Color) -> GraphicsContext.Filter
```

## Parameters

`color`

The color that the filter uses for the multiplication
operation.

## Return Value

A filter that multiplies the alpha component.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)