One shade in Keune's professional hair color collection, the 7.77 Keune Tinta Color Haarverf, is designed to give a deep, rich shade of dark blonde. This shade is a member of Keune's Tinta Color line, which is renowned for producing hair color colors with accuracy and vivid, long-lasting color effects.The particular color and tonal subtleties within the hair coloring spectrum are often represented by the number notation "7.77". It denotes a dark blonde tint in this instance with a warm, deep undertone that may be red or copper in color, giving the hair color more depth and richness.