grayscale()

The grayscale() CSS function converts the input image to grayscale. Its result is a <filter-function>.

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Syntax

grayscale(amount)

Parameters

amount

Amount of the input image that is converted to grayscale. It is specified as a <number> or a <percentage>. A value of 100% changes the input completely to grayscale, while a value of 0% leaves the input unchanged. Values between 0% and 100% have linear multipliers on the effect. The default value when omitted is 0. The initial value used for interpolation is 0.

Examples

Examples of correct values for grayscale()

grayscale(0)     /* No effect */
grayscale(.7)    /* 70% grayscale */
grayscale(100%)  /* Completely grayscale */

Specifications

Specification
Filter Effects Module Level 1
# funcdef-filter-grayscale

Browser compatibility

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See also

The other <filter-function> functions available to be used in values of the filter and backdrop-filter properties include: