The rgba() functional notation expresses a color according to its red, green, and blue components. An optional alpha component represents the color's transparency.
Note: CSS Colors Level 4 allows for space-separated in addition to comma-separated values.
rgba(255, 255, 255) /* white */ rgba(255, 255, 255, .5) /* white with 50% opacity */ rgba(255 255 255 / 0.5); /* CSS Colors 4 space-separated values */
rgba(R, G, B[, A])
R (red), G (green), and B (blue) can be either <number>s or <percentage>s, where the number 255 corresponds to 100%. A (alpha) can be a <number> between 0 and 1, or a <percentage>, where the number 1 corresponds to 100% (full opacity).
rgba(R G B[ / A])
CSS Colors Level 4 adds support for space-separated values in the functional notation.
No compatibility data found for css.types.color.alpha.
Check for problems with this page or contribute missing data to mdn/browser-compat-data.
No compatibility data found for css.types.color.space_separated_functional_notation.
Check for problems with this page or contribute missing data to mdn/browser-compat-data.
© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/color_value/rgba
| Name | CSS |
| Version | |
| Badge |
|
| Last Updated | 2022-04-27T17:24:15Z |