Based on Ashley Trinh's Witchy theme (https://imsca.red/terminal-theme/witchy), but for the new Windows terminal.

witchy-terminal.json

{
    "name": "Witchy",
    "black": "#725f8f",
    "red": "#c6586f",
    "green": "#a18174",
    "yellow": "#c67d6f",
    "blue": "#a15894",
    "purple": "#c65894",
    "cyan": "#977da1",
    "white": "#95948f",
    "brightBlack": "#b18bbf",
    "brightRed": "#c17286",
    "brightGreen": "#a29395",
    "brightYellow": "#dba5a8",
    "brightBlue": "#be8ac9",
    "brightPurple": "#db8ac9",
    "brightCyan": "#baa8c9",
    "brightWhite": "#ead1be",
    "background": "#131c26",
    "foreground": "#a1a8b9"
}

To use this color scheme:

1. Open your settings.json file for Windows Terminal.
2. Inside the schemes array, copy and paste the gist above. It will end up looking like this:

   "schemes": [
       {
             // any other colour scheme you have
       },
       // copy and paste here
   ],
   

3. Inside the profiles object, under defaults, set the colorscheme as "Witchy":

   "profiles": {
       "defaults": {
           "colorscheme": "Witchy",
           // any other settings you have
       }
   }
   

Customization

The cursorColor and selectionBackground strings are optional.

If you want to add them, simply add under the "name" field:

"cursorColor": "#AAAAAA",
"selectionBackground": "#AAAAAA",

and replace #AAAAAA with the color string of your choice.

Personally, I like using #C67D6F as the cursorColor and I don't have the selectionBackground set.

Credit

This theme was originally made by Ashley Trinh and is also available for Kitty and Xresources.