Darby s Tooth Shade Guide features the following 16 popular shades: A1, A2, A3, A3.5, A4, B1, B2, B3, B4, C1, C2, C3, C4, D2, D3 and D4. Features and Benefits Tooth shade determination in a single step 16 natural, empirically induced tooth shades Simple shade selection thanks to quick comparison of shade samples with the natural tooth Possibility of sorting in accordance with visually perceived levels of lightness Great for before and after comparison of bleaching Features a wide spectrum of tooth shades Easy to disinfect with an alcohol-free wipe