element-plus/docs/examples/layout/index.scss

:root {
  --ep-c-bg-row: #f9fafc;
  --ep-c-bg-purple: #d3dce6;
  --ep-c-bg-purple-dark: #99a9bf;
  --ep-c-bg-purple-light: #e5e9f2;
}

.dark {
  --ep-c-bg-row: #18191a;
  --ep-c-bg-purple: #46494d;
  --ep-c-bg-purple-dark: #242526;
  --ep-c-bg-purple-light: #667180;
}

.row-bg {
  padding: 10px 0;
  background-color: var(--ep-c-bg-row);
}

.ep-bg-purple-dark {
  background: var(--ep-c-bg-purple-dark);
}

.ep-bg-purple {
  background: var(--ep-c-bg-purple);
}

.ep-bg-purple-light {
  background: var(--ep-c-bg-purple-light);
}