The inability or near inability in colour blindness to differentiate between some colours is, in the most common form of it, between red and which other colour?
Evolution of human colour vision that are found between 450 and 625. Individuals with various forms of colour blindness such as deuteranopia and protanopia are missing human middle wavelength sensitive or long wavelength sensitive opsins. Their minimum wavelength differences are <5 but only at around 500. Protanopes, who are missing long wavelength sensitive cones, are unable to distinguish between colours in the green-yellow-red section of the electromagnetic spectrum. They find yellow, red and orange colours to have much lower brightness when compared to a trichromat. The dimming of these colours can result in confusion in many cases, such as when attempting to identify red traffic
Car colour popularity Car colour popularity The most popular car colours today are greyscale colours, with over 70% of cars produced globally being white, black, grey or silver. Red, blue and brown/beige cars range between 6% and 9% each, while all other colours amount to less than 5%. The results of colour popularity surveys conducted by American paint manufacturers PPG Industries (PPG) and DuPont (DP) are shown in the table and chart below. Note that the results for silver and grey may be affected by discrepancies in how the companies classify these colours. Silver is a popular colour for rental vehicles. Cars that