individual pixels of white, red, green, blue, yellow, cyan, magenta/fuchsia on a field of black in an uncompressed PNG file. Use a jeweler's loupe to resolve the R G B components of the pixel triad of your monitor. Set screen resolution to native resolution mode to avoid interpolation effects. Ensure image is at its actual native size of 218x130 by viewing it only.
"Blow-up" of the image's colored pixels: