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I'm looking for RGBA code for red color with opacity: Can someone tell me how can i find about it?(or where i can learn more about RGBA colors? Thanks.

jay
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1 Answers1

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rgba(red, green, blue, alpha)

The range for red, green and blue is 0-255. The high the number, the more presence the color shows.

The range for alpha is 0.0-1.0. The higher the number, the higher the opacity.

Fully opaque red would be rgba(255, 0, 0, 1)

McKayla
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    +1 Sometimes alpha is also specified as an integral in the range `[0, 255]` for a 32-bit color with 8-bit channels (including alpha); for a 1-bit alpha channel it would be `0 -or- 1`, etc. However, thinking of opacity as decimal number in `[0.0, 1.0]` is nice [and *the* way to represent alpha in some encodings] and makes a bunch of math "just work". –  Mar 06 '11 at 00:58