rgba0000

rgba0000 is an informal designation used in some digital design and programming discussions to reference an RGBA color where all channels are zero, corresponding to a fully transparent color. It is not part of any formal color standard.

RGBA stands for red, green, blue, and alpha. The red, green, and blue channels define the color, while alpha defines opacity. Channel values may be integers from 0 to 255 or floating-point values from 0 to 1. In standard color literals, a zero value for alpha yields full transparency, for example rgba(0,0,0,0).

The term rgba0000 typically appears as a mnemonic, placeholder, or variable name in tutorials or sample code rather than as a recognized color literal. Because it is not standardized or widely supported, software will not interpret rgba0000 as a valid color by itself; use a proper RGBA or hex notation when precise color control is required.

Related topics include color models, alpha compositing, and the use of alpha channels in CSS, SVG, and image formats. For fully transparent colors, common standards include rgba(0,0,0,0) or hex notation such as #00000000, depending on the context.