System.Console.ANSI.Types

ANSI Select Graphic Rendition (SGR) command

In respect of colors, there are three alternative commands:

1. the 'ANSI' standards allow for eight standard colors (with two intensities). Windows and many other terminals (including xterm) allow the user to redefine the standard colors (so, for example Vivid Green may not correspond to bright green;

1. an extension of the standard that allows true colors (24 bit color depth) in RGB space. This is usually the best alternative for more colors; and

1. another extension that allows a palette of 256 colors, each color specified by an index. Xterm provides a protocol for a palette of 256 colors that many other terminals, including Windows 10, follow. Some terminals (including xterm) allow the user to redefine some or all of the palette colors.

ANSI colors can be set on three different layers

ANSI's eight standard colors. They come in two intensities, which are controlled by ColorIntensity. Many terminals allow the colors of the standard palette to be customised, so that, for example, setSGR [ SetColor Foreground Vivid Green ] may not result in bright green characters.

ANSI's standard colors come in two intensities

ANSI general console intensity: usually treated as setting the font style (e.g. BoldIntensity causes text to be bold)

ANSI text underlining

ANSI blink speeds: values other than NoBlink are not widely supported

Given xterm's standard protocol for a 256-color palette, returns the index to that part of the palette which is a 6 level (6x6x6) color cube of 216 RGB colors. Throws an error if any of the red, green or blue channels is outside the range 0 to 5. An example of use is:

Given xterm's standard protocol for a 256-color palette, returns the index to that part of the palette which is a spectrum of 24 grays, from dark gray (0) to near white (23) (black and white are themselves excluded). Throws an error if the gray is outside of the range 0 to 23. An example of use is:

Given xterm's standard protocol for a 256-color palette, returns the index to that part of the palette which corresponds to the 'ANSI' standards' 16 standard, or 'system', colors (eight colors in two intensities). An example of use is: