Function applySatOff

apps/sim/lib/pptx-renderer/utils/color.ts:132–138

(hex: string, satOff: number)

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

/**
 * Convert OOXML alpha value (0-100000) to CSS opacity (0-1).