Colors & gradients
dart_tui speaks 24-bit true color. Paint per-character gradients across any number of stops, fill gradient backgrounds, and branch your palette on the terminal's detected background.
Gradient text & backgrounds
dart
// Per-character true-color gradient across any number of colors
final rainbow = gradientText('dart_tui', [
const RgbColor(203, 166, 247), // mauve
const RgbColor(116, 199, 236), // sky
const RgbColor(166, 227, 161), // green
]);
// Gradient background fill
final banner = gradientBackground(' Welcome! ', [
const RgbColor(30, 30, 46),
const RgbColor(49, 50, 68),
], foreground: const Style(foregroundRgb: RgbColor(205, 214, 244)));Light / dark background detection
Program sends an OSC 11 query at startup; the reply arrives automatically as BackgroundColorMsg in your update(). Branch your styles with isDarkRgb():
dart
case BackgroundColorMsg(:final rgb):
final dark = isDarkRgb(rgb);
return (MyModel(darkTheme: dark), null);CompleteColor lets you specify one color per profile (true-color / 256 / ANSI) so output degrades gracefully on limited terminals.