init(_:red:green:blue:opacity:)
Creates a constant color from red, green, and blue component values.
Declaration
init(_ colorSpace: Color.RGBColorSpace = .sRGB, red: Double, green: Double, blue: Double, opacity: Double = 1)Parameters
- colorSpace:
The profile that specifies how to interpret the color for display. The default is Srgb.
- red:
The amount of red in the color.
- green:
The amount of green in the color.
- blue:
The amount of blue in the color.
- opacity:
An optional degree of opacity, given in the range
0to1. A value of0means 100% transparency, while a value of1means 100% opacity. The default is1.
Discussion
This initializer creates a constant color that doesn’t change based on context. For example, it doesn’t have distinct light and dark appearances, unlike various system-defined colors, or a color that you load from an Asset Catalog with init(_:bundle:).
A standard sRGB color space clamps each color component — red, green, and blue — to a range of 0 to 1, but SwiftUI colors use an extended sRGB color space, so you can use component values outside that range. This makes it possible to create colors using the Color.RGBColorSpace.sRGB or Color.RGBColorSpace.sRGBLinear color space that make full use of the wider gamut of a diplay that supports Color.RGBColorSpace.displayP3.