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  "title" : "Color Attribute Keys"
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# Color Attribute Keys

Color types.

## Topics

### Constants

[`let kCIAttributeTypeOpaqueColor: String`](/documentation/CoreImage/kCIAttributeTypeOpaqueColor)

A Core Image color ([`CIColor`](/documentation/CoreImage/CIColor) object) that specifies red, green, and blue component values. Use this key for colors with no alpha component. If the key is not present, Core Image assumes color with alpha.

[`let kCIAttributeTypeGradient: String`](/documentation/CoreImage/kCIAttributeTypeGradient)

An n-by-1 gradient image used to describe a color ramp.

[`let kCIAttributeTypeColor: String`](/documentation/CoreImage/kCIAttributeTypeColor)

A Core Image color ([`CIColor`](/documentation/CoreImage/CIColor) object) that specifies red, green, and blue component values.


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