Prism Palette

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Fast, pure-Flutter color palette extraction — the maintained replacement for the discontinued palette_generator.

Built on material_color_utilities — the pro-grade color science library bundled with Flutter — so results match Material 3 dynamic color behavior.

Features

Dominant color extraction from any ui.Image
The six classic swatches: vibrant, lightVibrant, darkVibrant, muted, lightMuted, darkMuted
Region sampling — extract colors from a sub-rectangle of the image
Automatic pixel subsampling for large images (bounded, fast)
Pure Dart — no platform channels, works on all six platforms

Usage

final palette = await PrismPalette.fromImage(image);

// Dynamic theming
final themeColor = palette.vibrantColor ?? palette.dominantColor;

// Full control
final muted = palette.mutedColor;
final population = palette.populationOf(palette.dominantColor);

Region sampling

final palette = await PrismPalette.fromImage(
  image,
  region: const Rect.fromLTWH(0, 0, 0.5, 1), // left half only
);

From a list of colors

final palette = ColorPalette.fromColors([Color(0xFFFF0000), ...]);

Migrating from palette_generator

palette_generator	prism_palette
`PaletteGenerator.fromImageProvider(...)`	`PrismPalette.fromImage(image)`
`palette.dominantColor?.color`	`palette.dominantColor`
`palette.vibrantColor?.color`	`palette.vibrantColor`
`palette.colors`	`palette.colors`
`Swatch.population`	`PaletteSwatch.population`

Part of the Prism family — a cohesive suite of well-tested, pure-Flutter packages.

License

MIT