Function applyLumOff

apps/sim/lib/pptx-renderer/utils/color.ts:79–85

(hex: string, lumOff: number)

 * Adds to the L channel of HSL.
 */
export function applyLumOff(hex: string, lumOff: number): string {
  const { r, g, b } = hexToRgb(hex)
  const { h, s, l } = rgbToHsl(r, g, b)
  const newL = Math.max(0, Math.min(1, l + lumOff / 100000))
  const rgb = hslToRgb(h, s, newL)
  return rgbToHex(rgb.r, rgb.g, rgb.b)
}

/**
 * Apply saturation modulation.