8000 Correct values for semi-transparent hex colors by mattsarett · Pull Request #8153 · flutter/flutter · GitHub
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Correct values for semi-transparent hex colors #8153

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Correct values for semi-transparent hex colors #8153

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40 changes: 30 additions & 10 deletions packages/flutter/lib/src/material/colors.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,9 @@ class Colors {
/// * [Typography.black], which uses this color for its text styles.
/// * [Theme.of], which allows you to select colors from the current theme
/// rather than hard-coding colors in your build methods.
static const Color black87 = const Color(0xDD000000);
///
/// 0xF0 = 0xFF * LinearToSRGB(0.87)
static const Color black87 = const Color(0xF0000000);

/// Black with 54% opacity.
///
Expand All @@ -56,17 +58,23 @@ class Colors {
/// * [Typography.black], which uses this color for its text styles.
/// * [Theme.of], which allows you to select colors from the current theme
/// rather than hard-coding colors in your build methods.
static const Color black54 = const Color(0x8A000000);
///
/// 0xC2 = 0xFF * LinearToSRGB(0.54)
static const Color black54 = const Color(0xC2000000);

/// Black with 38% opacity.
///
/// Used for the placeholder text in data tables in light themes.
static const Color black38 = const Color(0x61000000);
///
/// 0xA6 = 0xFF * LinearToSRGB(0.38)
static const Color black38 = const Color(0xA6000000);

/// Black with 45% opacity.
///
/// Used for modal barriers.
static const Color black45 = const Color(0x73000000);
///
/// 0xB3 = 0xFF * LinearToSRGB(0.45)
static const Color black45 = const Color(0xB3000000);

/// Black with 26% opacity.
///
Expand All @@ -77,12 +85,16 @@ class Colors {
/// * [ThemeData.disabledColor], which uses this color by default in light themes.
/// * [Theme.of], which allows you to select colors from the current theme
/// rather than hard-coding colors in your build methods.
static const Color black26 = const Color(0x42000000);
///
/// 0x8B = 0xFF * LinearToSRGB(0.26)
static const Color black26 = const Color(0x8B000000);

/// Black with 12% opacity.
///
/// Used for the background of disabled raised buttons in light themes.
static const Color black12 = const Color(0x1F000000);
///
/// 0x61 = 0xFF * LinearToSRGB(0.12)
static const Color black12 = const Color(0x61000000);


/// Completely opaque white.
Expand All @@ -106,7 +118,9 @@ class Colors {
/// * [Typography.white], which uses this color for its text styles.
/// * [Theme.of], which allows you to select colors from the current theme
/// rather than hard-coding colors in your build methods.
static const Color white70 = const Color(0xB3FFFFFF);
///
/// 0xDA = 0xFF * LinearToSRGB(0.70)
static const Color white70 = const Color(0xDAFFFFFF);

/// White with 32% opacity.
///
Expand All @@ -117,15 +131,21 @@ class Colors {
/// * [ThemeData.disabledColor], which uses this color by default in dark themes.
/// * [Theme.of], which allows you to select colors from the current theme
/// rather than hard-coding colors in your build methods.
static const Color white30 = const Color(0x4DFFFFFF);
///
/// 0x99 = 0xFF * LinearToSRGB(0.32)
static const Color white30 = const Color(0x99FFFFFF);

/// White with 12% opacity.
///
/// Used for the background of disabled raised buttons in dark themes.
static const Color white12 = const Color(0x1FFFFFFF);
///
/// 0x61 = 0xFF * LinearToSRGB(0.12)
static const Color white12 = const Color(0x61FFFFFF);

/// White with 10% opacity.
static const Color white10 = const Color(0x1AFFFFFF);
///
/// 0x59 = 0xFF * LinearToSRGB(0.10)
static const Color white10 = const Color(0x59FFFFFF);


/// The red primary swatch.
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