materialuiupgraded/packages/material-ui/src/colors/blueGrey.js

Material-UI's workspace package

const blueGrey = {
  50: '#eceff1',
  100: '#cfd8dc',
  200: '#b0bec5',
  300: '#90a4ae',
  400: '#78909c',
  500: '#607d8b',
  600: '#546e7a',
  700: '#455a64',
  800: '#37474f',
  900: '#263238',
  A100: '#cfd8dc',
  A200: '#b0bec5',
  A400: '#78909c',
  A700: '#455a64',
};

export default blueGrey;