SwiftUI Color.blue

.blue

Default System Tint & Links

Adaptive System Token•iOS 13.0+, macOS 10.15+, tvOS 13.0+, watchOS 6.0+, visionOS 1.0+

Complete technical specification and developer reference for Blue in Apple's SwiftUI design system. In light appearance, it resolves to HEX #0088FF; in dark appearance, it dynamically adapts to HEX #0091FF. Features wide-gamut Display P3 values, UIKit bridge (UIColor.systemBlue), AppKit bridge (NSColor.systemBlue), WCAG contrast audit, and Xcode drop-in initializers.

Light Mode#0088FF

Dark Mode#0091FF

Blue Color Preview

SwiftUI's adaptable blue.

Color.blue

Copy:

Dynamic Asset

Default System Tint & Links

iOS 13.0+, macOS 10.15+, tvOS 13.0+, watchOS 6.0+, visionOS 1.0+

Initializers & Color Spaces

Color(r:g:b:)Color(red: 0.000, green: 0.533, blue: 1.000)

Color(r:g:b:op:)Color(red: 0.000, green: 0.533, blue: 1.000, opacity: 1.00)

Color(hue:sat:bri:)HSBColor(hue: 0.578, saturation: 1.000, brightness: 1.000, opacity: 1.00)

Color(.displayP3)Wide GamutColor(.displayP3, red: 0.231, green: 0.525, blue: 0.969, opacity: 1.00)

Color(.sRGB)Color(.sRGB, red: 0.000, green: 0.533, blue: 1.000, opacity: 1.00)

Color(hex:)ExtensionColor(hex: "#0088FF")

#colorLiteralXcode#colorLiteral(red: 0.000, green: 0.533, blue: 1.000, alpha: 1.00)

Color(uiColor:)iOSColor(uiColor: UIColor(red: 0.000, green: 0.533, blue: 1.000, alpha: 1.00))

Active HEX: #0088FFP3 R: 0.231 G: 0.525 B: 0.969

Technical Color Specifications

Exact resolved HEX codes, sRGB 8-bit components, HSL, and normalized Swift floating-point decimals for Light and Dark modes.

Color Metric / Space	Light Appearance	Dark Appearance	Swift Code Literal
HEX Code	#0088FF	#0091FF	Color(hex: "#0088FF")
sRGB (0–255)	rgb(0, 136, 255)	rgb(0, 145, 255)	(r: 0.000, g: 0.533, b: 1.000)
Display P3 (Wide Gamut)	P3 (0.231, 0.525, 0.969)	P3 (0.247, 0.561, 0.969)	Color(.displayP3, ...)
HSL / HSB	hsl(208, 100%, 50%)	hsl(206, 100%, 50%)	Color(hue:sat:bri:)
Platform Bridge	UIKit: `UIColor.systemBlue`	AppKit: `NSColor.systemBlue`	Color(uiColor:) / Color(nsColor:)

Light Appearance

Light Theme

HEX Code

#0088FF

RGB (0–255)

rgb(0, 136, 255)

HSL

hsl(208, 100%, 50%)

Normalized Swift Literal:

(r: 0.000, g: 0.533, b: 1.000)

Dark Appearance

Dark Theme

HEX Code

#0091FF

RGB (0–255)

rgb(0, 145, 255)

HSL

hsl(206, 100%, 50%)

Normalized Swift Literal:

(r: 0.000, g: 0.569, b: 1.000)

Drop-In Developer Snippets

Ready-to-paste code blocks for Xcode asset catalogs and Swift files.

Xcode Location: Save as Contents.json inside Assets.xcassets/Blue.colorset/

Includes Light + Dark Modes

Contents.json

{
  "colors": [
    {
      "color": {
        "color-space": "srgb",
        "components": {
          "red": "0.000",
          "green": "0.533",
          "blue": "1.000",
          "alpha": "1.000"
        }
      },
      "idiom": "universal"
    },
    {
      "appearances": [
        {
          "appearance": "luminosity",
          "value": "dark"
        }
      ],
      "color": {
        "color-space": "srgb",
        "components": {
          "red": "0.000",
          "green": "0.569",
          "blue": "1.000",
          "alpha": "1.000"
        }
      },
      "idiom": "universal"
    }
  ],
  "info": {
    "author": "xcode",
    "version": 1
  }
}

Live UI Component Sandbox

Preview Color.blue inside standard Apple interface components.

Interactive Controls

Active TagBadge 99+

Toggle Tint

Container & Typography Styling

●SwiftUI Notification

Just now

Demonstrates how Apple designers pair system background tints with dynamic Blue accents.

Dynamic Headline in Blue

.foregroundStyle(.blue)

Platform Implementation Snippets

Ready-to-use Swift code for SwiftUI, UIKit, and AppKit applications.

SwiftUI (Swift 5.9+)

// Standard SwiftUI Usage
Text("Hello, Apple")
    .foregroundStyle(Color.blue)

// Background & Shape Fill
RoundedRectangle(cornerRadius: 16)
    .fill(Color.blue)
    .frame(width: 200, height: 50)

// Prominent Action Button
Button("Confirm Action") {
    // Action
}
.buttonStyle(.borderedProminent)
.tint(Color.blue)

WCAG 2.1 Accessibility Contrast Audit

Contrast calculations of Blue against pure white and iOS OLED dark surfaces.

Light Mode (#0088FF)on White (#FFF)

Contrast Ratio:3.52:1

Normal Text (4.5:1 AA): Fail

Dark Mode (#0091FF)on Dark (#1C1C1E)

Contrast Ratio:5.26:1

Normal Text (4.5:1 AA): Pass (AA)

Recommended HIG Use Cases

Standard interactive links and buttons
Selection outlines and focus rings
Primary brand-neutral accents

Anti-Patterns to Avoid

Destructive actions or warning signals
Static unlinked decorative text

Browse More SwiftUI Colors

Quickly jump to other Apple system colors and semantic tokens.

Red

Frequently Asked Questions

How do I use Color.blue in SwiftUI?

In SwiftUI, apply the color directly using view modifiers like .foregroundStyle(.blue), .tint(.blue), or .background(.blue). You can also instantiate it via Color.blue.

What is the HEX code for SwiftUI Blue in light and dark mode?

In light appearance, SwiftUI Blue resolves to #0088FF. In dark appearance, it automatically adapts to #0091FF.

What is the UIKit and AppKit equivalent of SwiftUI Color.blue?

The UIKit equivalent is UIColor.systemBlue (accessible in SwiftUI via Color(uiColor: .systemBlue)). The AppKit equivalent is NSColor.systemBlue (accessible via Color(nsColor: .systemBlue)).

Does SwiftUI Color.blue adapt automatically to dark mode?

Yes, Color.blue is a dynamic Apple system token that automatically updates between light (#0088FF) and dark (#0091FF) appearances when the system appearance changes.

What is the Display P3 and sRGB value of Color.blue?

Color.blue uses resolved sRGB values (#0088FF in light, #0091FF in dark) and supports wide color gamut Display P3 coordinates for high-fidelity rendering on Apple Retina displays.