chromium/ios/chrome/common/ui/colors/resources/Assets.xcassets/primary_background_color.colorset/Contents.json

{
  "info": {
    "version": 1,
    "author": "xcode"
  },
  "colors": [
    {
      "idiom": "universal",
      "color": {
        "color-space": "display-p3",
        "components": {
          "alpha": "1.000",
          "red": "0xFF",
          "green": "0xFF",
          "blue": "0xFF"
        }
      }
    },
    {
      "idiom": "universal",
      "appearances": [
        {
          "appearance": "luminosity",
          "value": "dark"
        }
      ],
      "color": {
        "color-space": "display-p3",
        "components": {
          "alpha": "1.000",
          "red": "0x20",
          "green": "0x21",
          "blue": "0x24"
        }
      }
    }
  ]
}