CSS grayscale()

Converts an element to grayscale.

Syntax

filter: grayscale(<value>);

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where a required <value> can be one of the following:

• Number value: 0, .4
• Percentage value: 100%, 50%

Note: Values of 0 and 0% will leave the image unchanged. Values of 1 and 100% will convert the image to complete grayscale. If a value is omitted, the default value is 1.

Example 1

Give the image a grayscale of 20%:

.banner-image {
  filter: grayscale(20%);
}

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The first image on the left is the original, and the image on the right has the grayscale filter set at (20%).