excalidraw/src/css/theme.scss

@import "open-color/open-color.scss";

:root {
  --bg-color-island: rgba(255, 255, 255, 0.9);
  --popup-background-color: #{$oc-white};
  --border-radius-m: 4px;
  --space-factor: 0.25rem;
  --button-gray-1: #{$oc-gray-2};
  --button-gray-2: #{$oc-gray-4};
  --button-gray-3: #{$oc-gray-5};
  --input-border-color: #{$oc-gray-3};
  --input-background-color: #{$oc-white};
  --input-hover-background-color: #{$oc-gray-1};
  --input-label-color: #{$oc-gray-7};
  --icon-fill-color: #{$oc-black};
  --icon-green-fill-color: #{$oc-green-9};
  --keybinding-color: #{$oc-gray-5};
  --color-overlay-text-color: #ccc;
  --sat: env(safe-area-inset-top);
  --sab: env(safe-area-inset-bottom);
  --sal: env(safe-area-inset-left);
  --sar: env(safe-area-inset-right);
  --text-color-primary: #{$oc-gray-8};
  --shadow-island: 0 1px 5px #{transparentize($oc-black, 0.85)};
  --overlay-background-color: #{transparentize($oc-white, 0.12)};
  --border-radius-m: 4px;
  --space-factor: 0.25rem;
  --dropdown-icon: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="292.4" height="292.4" viewBox="0 0 292 292"><path d="M287 197L159 69c-4-3-8-5-13-5s-9 2-13 5L5 197c-3 4-5 8-5 13s2 9 5 13c4 4 8 5 13 5h256c5 0 9-1 13-5s5-8 5-13-1-9-5-13z"/></svg>');
  --focus-highlight-color: #{$oc-blue-2};
  --select-highlight-color: #{$oc-blue-5};
  --appearance-filter: none;
  --button-special-active-background-color: #{$oc-green-0};
  --button-destructive-color: #{$oc-red-9};
  --button-destructive-background-color: #{$oc-red-1};
  --popup-secondary-background-color: #{$oc-gray-1};
  --popup-text-color: #{$oc-black};
  --popup-text-inverted-color: #{$oc-white};
}

.excalidraw {
  &.Appearance_dark {
    background: #000;

    &.Appearance_dark-background-none {
      background: none;
    }
  }

  &.Appearance_dark {
    --text-color-primary: #{$oc-gray-4};
    --bg-color-island: #1e1e1e;
    --popup-background-color: #2c2c2c;
    --button-gray-1: #363636;
    --button-gray-2: #272727;
    --button-gray-3: #222;
    --input-border-color: #2e2e2e;
    --input-background-color: #121212;
    --input-hover-background-color: #181818;
    --input-label-color: #{$oc-gray-2};
    --icon-fill-color: #{$oc-gray-4};
    --icon-green-fill-color: #{$oc-green-4};
    --keybinding-color: #{$oc-gray-6};
    --color-overlay-text-color: #bbb;
    --shadow-island: 0 1px 5px #{transparentize($oc-black, 0.7)};
    --overlay-background-color: rgba(30, 30, 30, 0.88);
    // #{$oc-gray-4}; inlined
    --dropdown-icon: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="292.4" height="292.4" viewBox="0 0 292 292"><path fill="%23ced4da" d="M287 197L159 69c-4-3-8-5-13-5s-9 2-13 5L5 197c-3 4-5 8-5 13s2 9 5 13c4 4 8 5 13 5h256c5 0 9-1 13-5s5-8 5-13-1-9-5-13z"/></svg>');
    --focus-highlight-color: #{$oc-blue-6};
    --select-highlight-color: #{$oc-blue-4};
    --appearance-filter: invert(93%) hue-rotate(180deg);
    --button-special-active-background-color: #204624;
    --button-destructive-color: #{$oc-red-3};
    --button-destructive-background-color: #5a0000;
    --popup-secondary-background-color: #222;
    --popup-text-color: #{$oc-gray-4};
    --popup-text-inverted-color: #2c2c2c;
  }
}