The GitHub repo mbadolato/iTerm2-Color-Schemes provides a sampling of common color schemes. Most terminals support an additional 8 colors corresponding to the bold or bright variants of the original colors. The role of terminal color schemes is to map the 8 colors to RGB values.

ANSI Escape sequences: easy-to-read chart of control sequences.

Colors In Terminal: describes control sequences at a high level and covers 256-color support.

Thus, each programming language has its own method of representing the escape character within a string:

However, most shells recognize the Escape key as a control character (usually for a keyboard shortcut) and therefore do not translate the Escape key into any text representation. This is one of the control characters (0-31 and 127), not one of the printable characters (32-126).ĪSCII code 27 is indeed the character corresponding to the Escape key on a keyboard. The ANSI ASCII standard represents the escape ESC character by the decimal number 27 (33 in octal, 1B in hexadecimal). This mapping can usually be changed according to user-defined color schemes. However, modern computer screens are capable of displaying 24-bit RGB color, so modern terminals have to implement a mapping of the 8 original colors to RGB values. Old terminals could only display a maximum of 8 colors. If the input contains specific “control characters,” then the terminal may alter certain display properties of the text, such as the color or font. Terminals traditionally take an input of bytes and display them as white text on a black background.

ANSI Escape Codes for Terminal Graphics.

Best font for terminal