Function applyHueOff

apps/sim/lib/pptx-renderer/utils/color.ts:118–125

(hex: string, hueOff: number)

 * Adds to the hue channel of HSL, wrapping at 360.
 */
export function applyHueOff(hex: string, hueOff: number): string {
  const { r, g, b } = hexToRgb(hex)
  const { h, s, l } = rgbToHsl(r, g, b)
  const offsetDeg = hueOff / 60000
  const newH = (((h + offsetDeg) % 360) + 360) % 360
  const rgb = hslToRgb(newH, s, l)
  return rgbToHex(rgb.r, rgb.g, rgb.b)
}

/**
 * Apply saturation offset (additive).