Colourless

Colourless or colorless may refer to:

• Transparency and translucency, transmitting all or most colours
  • Neutral-density filter
• Black and white, a form of visual representation that does not use color
  • Grayscale

• Black and white (disambiguation)
• Monochrome (disambiguation)
• Neutral (disambiguation)
• Boredom
• Colorfulness
• Shades of gray