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Transparency of image. PNG offers a variety of transparency options. With true-color and grayscale images either a single pixel value can be declared as transparent or an alpha channel can be added (enabling any percentage of partial transparency to be used). For paletted images, alpha values can be added to palette entries.
RGBA stands for red green blue alpha. While it is sometimes described as a color space, it is actually a three-channel RGB color model supplemented with a fourth alpha channel. Alpha indicates how opaque each pixel is and allows an image to be combined over others using alpha compositing, with transparent areas and anti-aliasing of the edges of ...
The method used for selecting the colours for various top-level pages, e.g. Main Page, Community Portal, Contents, and Help:Contents. The 3 colours are generated using the HSV colour space, then translated into RGB. Hue. Saturation 4% Brightness 100% main background. Saturation 10% Brightness 100% 2nd header, accent colour.
One color entry in a single GIF or PNG image's palette can be defined as "transparent" rather than an actual color. This means that when the decoder encounters a pixel with this value, it is rendered in the background color of the part of the screen where the image is placed, also if this varies pixel-by-pixel as in the case of a background image .
Web-based tools specifically for converting color values are also available. HTML color names. Recent W3C specifications of color names distinguishes between basic and extended colors. In HTML and XHTML, colors can be used for text, background color, frame borders, tables, and individual table cells. Basic colors
Alpha compositing. This color spectrum image's alpha channel falls off to zero at its base, where it is blended with the background color. In computer graphics, alpha compositing or alpha blending is the process of combining one image with a background to create the appearance of partial or full transparency. [1]
Indexed color. A 2-bit indexed color image. The color of each pixel is represented by a number; each number (the index) corresponds to a color in the color table (the palette ). In computing, indexed color is a technique to manage digital images ' colors in a limited fashion, in order to save computer memory and file storage, while speeding up ...
A diagram demonstrating additive color with RGB. The RGB color model is an additive color model [1] in which the red, green and blue primary colors of light are added together in various ways to reproduce a broad array of colors. The name of the model comes from the initials of the three additive primary colors, red, green, and blue.