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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

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
grayscale 18 12 35 No 15 6 4.4 53 35 14 6 6.0

See also

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

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https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/grayscale