What is the photopigment associated with a S cone?

The photopigment associated with S cones, which are sensitive to short wavelengths of light, is known as cyanolabe. This pigment is particularly responsive to blue light, falling within the short wavelength range of the visible spectrum. The S cones play a crucial role in color vision, particularly in the perception of blue hues.

In contrast, erythrolabe is associated with L cones, sensitive to long wavelengths and red light, while chlorolabe corresponds to M cones, which are more responsive to medium wavelengths and green light. Melanolabe does not correspond to any of the commonly understood cone photopigments in the context of human color vision and is often associated with non-visual photoreception. Understanding each of these pigments and their functions helps clarify how cones contribute to our overall visual perception of color.