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ASCII colors, often referred to as ANSI escape codes, are sequences used to control text formatting, including color, in terminal and console output. These codes are embedded within strings and are interpreted by the terminal to display text in different colors and styles.

Here's a brief explanation of how they work and how you can convert them into RGB colors:

ANSI Escape Codes for Colors

ANSI escape codes for colors generally follow this pattern:

• \x1b or \e or ESC (Escape character)
• [ (Opening bracket)
• Followed by one or more numbers and a letter (like m for color)

For example, \x1b[31m sets the text color to red, and \x1b[39m resets it to the default color.

Common Color Codes

Here are some common ANSI color codes:

• \x1b[30m - Black
• \x1b[31m - Red
• \x1b[32m - Green
• \x1b[33m - Yellow
• \x1b[34m - Blue
• \x1b[35m - Magenta
• \x1b[36m - Cyan
• \x1b[37m - White
• \x1b[39m - Default color

Converting ANSI Colors to RGB

While ANSI colors are not directly specified in RGB values, we can map them to approximate RGB values based on common terminal color schemes.

Here's a basic mapping of ANSI color codes to their RGB equivalents:

• \x1b[30m - Black: #000000
• \x1b[31m - Red: #FF0000
• \x1b[32m - Green: #00FF00
• \x1b[33m - Yellow: #FFFF00
• \x1b[34m - Blue: #0000FF
• \x1b[35m - Magenta: #FF00FF
• \x1b[36m - Cyan: #00FFFF
• \x1b[37m - White: #FFFFFF
• \x1b[39m - Default color: terminal's default (varies)

Example Conversion

Let's take your output and convert it to RGB:

Error: Expected values to be strictly deep-equal:
�[32m+ actual�[39m �[31m- expected�[39m

�[32m+�[39m [
�[32m+�[39m   'en'
�[32m+�[39m ]
�[31m-�[39m []
   --> src/manager.test.w:15:1
   |   model: model,
   | );
   | 
15 | expect.equal(manager.allLanguages, []);
   | ^
at /Users/eladb/playground/believe-in-serverless/src/manager.test.w:15:1

Here’s what it would look like with the ANSI codes replaced by RGB values:

Error: Expected values to be strictly deep-equal:
<font color="#00FF00">+ actual</font> <font color="#FF0000">- expected</font>

<font color="#00FF00">+</font> [
<font color="#00FF00">+</font>   'en'
<font color="#00FF00">+</font> ]
<font color="#FF0000">-</font> []
   --> src/manager.test.w:15:1
   |   model: model,
   | );
   | 
15 | expect.equal(manager.allLanguages, []);
   | ^
at /Users/eladb/playground/believe-in-serverless/src/manager.test.w:15:1

This should give you a clearer idea of how ANSI escape codes are translated to RGB colors for display in a terminal.

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