Does Light Mode Versus Dark Mode Make a Difference?

Light and dark modes are color schemes most commonly used for text, background, GUI (graphical user interface) elements, and web design. Modern devices like computers, cell phones, and tablets offer users the choice of light mode or dark mode. The concept is called contrast polarity. This is the difference between the text color and the background colors.

Positive contrast polarity, more commonly known as light mode refers to the font being dark on a light background.

Negative contrast polarity in dark mode denotes the combination of light or white text on a dark or black background.

Pros and cons of dark mode:


  • Longer battery life
  • Reduce blue light exposure
  • Reduce glare
  • Decrease in eyestrain in low light conditions


  • In bright light, text appears washed out
  • Long pieces of context or text are more challenging to read
  • Prolonged use of dark mode can cause discomfort when using a device in light mode

Pros and cons of light mode:


  • Better for visual acuity tasks
  • Smaller fonts are easier to see
  • There is more overall light so the people contracts more


  • Long-term costs associated with myopia
  • Hard to read for people with cloudy ocular media

As you can see there are pros and cons to each mode. The debate about which interface to use or which is better will continue. It is best to use common sense when deciding.

  1. If a particular mode causes discomfort, change it!
  2. Use the 20-20-20 rule.
  3. See your eyecare professional if you find you have problems with your vision in any mode.








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