Function applyHueMod

apps/sim/lib/pptx-renderer/utils/color.ts:105–111

(hex: string, hueMod: number)

 * In OOXML, hueMod multiplies the hue value. Hue wraps around at 360.
 */
export function applyHueMod(hex: string, hueMod: number): string {
  const { r, g, b } = hexToRgb(hex)
  const { h, s, l } = rgbToHsl(r, g, b)
  const newH = (h * (hueMod / 100000)) % 360
  const rgb = hslToRgb(newH, s, l)
  return rgbToHex(rgb.r, rgb.g, rgb.b)
}

/**
 * Apply hue offset (additive).