shade method

Color shade(
  1. int level
)

Returns a shade of this color by mixing it with black by level% (0–100).

Colors.blue.shade(20) // 20% darker blue

Implementation

Color shade(int level) {
  assert(level >= 0 && level <= 100, 'level must be 0–100');
  return mix(const Color(0xFF000000), level / 100);
}