composer require wallacemaxters/filament-image-color-picker

use WallaceMaxters\FilamentImageColorPicker\ImageColorPicker;

// 

return $form->schema([
    TextInput::make('image_url')->url()->live(),
    ImageColorPicker::make('color')
        ->columnSpanFull()
        ->image(fn ($get) => $get('image_url')),
]);

 Forms\Components\ColorPicker::make('color')
    ->suffixAction(fn ($get) => 
        Forms\Components\Actions\Action::make('color-from-image')
            ->action(function ($set, array $data) {
                $set('color', $data['color']);
            })
            ->icon('heroicon-o-eye-dropper')
            ->form([
                ImageColorPicker::make('color')
                    ->format('hsl')
                    ->image(fn() => $get('image_url'))
            ])

    ),