Question

question # 2
multiple choice
the contrast ratio of red-90 text on a yellow-30 background is _ to 1.
30
60
4
3

Explanation:

Step1: Recall contrast - ratio formula

Contrast ratio is calculated as the ratio of the luminance of the lighter color to the luminance of the darker color. Here, the luminance of red - 90 is considered as 90 and that of yellow - 30 is 30.

Step2: Calculate the ratio

The contrast ratio $r=\frac{90}{30}=3$.

Answer:

D. 3