OpenSlides/client/src/assets/styles/openslides-theme.scss

// define a real custom palette (using http://mcg.mbitson.com)
$openslides-blue: (
    50: #e6eff2,
    100: #c1d6e0,
    200: #98bbcb,
    300: #6fa0b6,
    400: #508ba6,
    500: #317796,
    600: #2c6f8e,
    700: #002a42,
    800: #00253c,
    900: #001f33,
    A100: #9fd7ff,
    A200: #6cc2ff,
    A400: #39acff,
    A700: #1fa2ff,
    contrast: (
        50: #ffffff,
        100: #ffffff,
        200: #ffffff,
        300: #ffffff,
        400: #ffffff,
        500: #ffffff,
        600: #ffffff,
        700: #ffffff,
        800: #ffffff,
        900: #ffffff,
        A100: #000000,
        A200: #000000,
        A400: #000000,
        A700: #000000
    )
);

$openslides-green: (
    50: #e9f2e6,
    100: #c8e0bf,
    200: #a3cb95,
    300: #7eb66b,
    400: #62a64b,
    500: #46962b,
    600: #3f8e26,
    700: #0a321e,
    800: #092d1a,
    900: #072616,
    A100: #acff9d,
    A200: #80ff6a,
    A400: #55ff37,
    A700: #3fff1e,
    contrast: (
        50: #000000,
        100: #000000,
        200: #000000,
        300: #000000,
        400: #000000,
        500: #ffffff,
        600: #ffffff,
        700: #ffffff,
        800: #ffffff,
        900: #ffffff,
        A100: #000000,
        A200: #000000,
        A400: #000000,
        A700: #000000
    )
);

// Generate paletes using: https://material.io/design/color/
// default values fir mat-palette: $default: 500, $lighter: 100, $darker: 700.
$openslides-primary: mat-palette($openslides-blue);
$openslides-accent: mat-palette($mat-light-blue);
// $openslides-primary: mat-palette($openslides-green);
// $openslides-accent: mat-palette($mat-amber);

$openslides-warn: mat-palette($mat-red);

// Create the theme object (a Sass map containing all of the palettes).
$openslides-theme: mat-light-theme($openslides-primary, $openslides-accent, $openslides-warn);