Natural shades are indicated only with the one number, which indicates the level.
DN: DEEP NATURAL shades are true-to-tone natural shades maintaining the level of shade with improved gray hair coverage & stronger neutralization power when compared with natural shades.
77.40: The double level 77. indicates the presence of the C5 molecule. Double level shades are intensive and have a great lasting effect thanks to the C5 molecule.
8.04: The zero before the shade indicates a soft shade final result.
7.40: The zero behind the shade indicates an intensive final result.
.812: In case no level is indicated, the color has no base and contains only the shade. Final color result depends on the existing level and volumes used.
Shades intensity examples from soft to very strong: