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The Allegro library supported in the (legacy) version 4, an emulated 12-bit color mode example code ("ex12bit.c"), using 8-bit indexed color in VGA/SVGA. It used two pixels for each emulated pixel, paired horizontally, and a specifically adapted 256-color palette.
The 80 hex value, which is 128 in decimal, represents a 50.2% alpha value because 128 is approximately 50.2% of the maximum value of 255 (FF hex); to continue to decipher the 80FFFF00 value, the first FF represents the maximum value red can have; the second FF is like the previous but for green; the final 00 represents the minimum value blue ...
A hex triplet is a six-digit (or eight-digit), three-byte (or four-byte) hexadecimal number used in HTML, CSS, SVG, and other computing applications to represent colors.The bytes represent the red, green, and blue components of the color.
The Printer Working Group (PWG) of the IEEE publishes a standard, PWG 5101.1, whose mandatory color names are based upon RFC 3805, successor to RFC 1759 which imported the functional color names other, unknown and transparent alongside seven basic colors from ISO 10175 and ISO 10180 , and JTAPI. [18]
Useful for blanking out a bit of map using ' ' character, to make a plainer background for putting a second label over the top. 50% Opacity: Any of the named colours has an option to make it only 50% opaque. eg | label-color3 = hard red 50% will produce a translucent red, in which the background map also has some visibiliy. (nb only works with 50%.
To use a colour in a template or table you can use the hex triplet (e.g. bronze is #CD7F32) or HTML color names (e.g. red). Editors are encouraged to make use of Brewer palettes for charts, maps, and other entities, using this tool .
Download QR code; Print/export ... Alternatively, colors can be specified using either RGB or hex notation. Examples ... – sets both text and background ...
6.0 and below have broken alpha-channel transparency support (will display the default background color instead). [84] [85] [86] 7.0 and below cannot combine 8-bit alpha transparency AND element opacity (CSS – filter: Alpha (opacity=xx)) without filling partially transparent sections with black. [87] 8.0 and below have inconsistent/broken ...