Question

Which of the following function adjusts the difference between light and dark values, for use by the filter property?

(a) contrast()

(b) dark()

(c) light()

(d) brightness()

This question was addressed to me at a job interview.

I'd like to ask this question from CSS Functions topic in portion CSS Fundamentals, Colors and Styling of CSS

Answer 1

Correct answer is (a) contrast()

To explain I would say: A value of 100% or a decimal value of 1 leaves the image as is, while 0 results in black. Increasing the value past 1 or 100% produces more dramatically stratified areas of light and dark.