List of pure colors supported by the Sega Mega Drive

sega_colors.js

const colors = [];
const steps = [ 0, 0x34, 0x57, 0x74, 0x90, 0xAC, 0xCE, 0xFF ];
for (color = 0;  color <= 0777; color++){
  colors.push( '#' +
    color
      .toString(8)
      .padStart(3,'0')
      .split('')
      .map( c => steps[c].toString(16).padStart(2,'0') )
      .join('')
   );
}

colors;