accentSwatchFromPrimaryHex function

Map<int, String> accentSwatchFromPrimaryHex(
  1. String primaryHex
)

Buckner logic: https://github.com/mbitson/mcg/blob/858cffea0d79ac143d590d110fbe20a1ea54d59d/scripts/controllers/ColorGeneratorCtrl.js#L275

Implementation

Map<int, String> accentSwatchFromPrimaryHex(String primaryHex) {
  final primary = Color.hex(primaryHex);
  final baseDark = primary * primary;
  final baseTriad = primary.tetrad();
  return {
    100:
        _mix(baseDark, baseTriad[3], 15).saturate(80).lighten(48).toHexString(),
    200:
        _mix(baseDark, baseTriad[3], 15).saturate(80).lighten(36).toHexString(),
    400: _mix(baseDark, baseTriad[3], 15)
        .saturate(100)
        .lighten(31)
        .toHexString(),
    700: _mix(baseDark, baseTriad[3], 15)
        .saturate(100)
        .lighten(28)
        .toHexString(),
  };
}