brightness() - CSS: Cascading Style Sheets 编辑

The brightness() CSS function applies a linear multiplier to the input image, making it appear brighter or darker. Its result is a <filter-function>.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

Syntax

brightness(amount)

Parameters

amount

The brightness of the result, specified as a <number> or a <percentage>. A value under 100% darkens the image, while a value over 100% brightens it. A value of 0% will create an image that is completely black, while a value of 100% leaves the input unchanged. The lacuna value for interpolation is 1.

Examples

Setting brightness using numbers and percentages

brightness(0%)   /* Completely black */
brightness(0.4)  /* 40% brightness */
brightness(1)    /* No effect */
brightness(200%) /* Double brightness */

Specifications

Specification	Status
Filter Effects Module Level 1 The definition of 'brightness()' in that specification.	Working Draft

See also

• <filter-function>
• blur()
• contrast()
• drop-shadow()
• grayscale()
• hue-rotate()
• invert()
• opacity()
• saturate()
• sepia()