Wcag contrast checker

1. What is WCAG contrast checker?
2. How do you use WCAG color contrast checker?
3. What is a contrast checker?
4. How do I check the contrast of an image?

What is WCAG contrast checker?

It checks the color contrast between the foreground and background of the elements that are in the page according to the WCAG 2. It evaluates the contrast on all elements of the page considering their computed style for the color and background-color CSS properties.

How do you use WCAG color contrast checker?

Explanation. Enter a foreground and background color in RGB hexadecimal format (e.g., #FD3 or #F7DA39) or choose a color using the color picker. The Lightness slider can be used to adjust the selected color. WCAG 2.0 level AA requires a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text.

What is a contrast checker?

The tool tests the contrast ratio of background and text colors for accessibility.

How do I check the contrast of an image?

Contrast is defined as the difference between the highest and lowest intensity value of the image. So you can easily calculate it from the respective histogram. Example: If you have a plain white image, the lowest and highest value are both 255, thus the contrast is 255-255=0.