Absolute V magnitude vs. B − V color for the stars on the line of sight of the Chamaeleon I cloud with known spectral type and luminosity class, as labeled. The black line represents the main-sequence locus, the dashed line represents the Giants locus, and the dotted line the subgiants locus (Pecaut & Mamajek 2013; Gottlieb 1978, see text for details). The dashed and dotted lines represent the limit between luminosity classes V, IV/V, and IV. The black arrow indicates the reddening vector.