I operate with colors in much the same way as in the picture, but in principle I guessed which color would be the most unpleasant.
Pantone 448 ° C, or, more simply, dark gray-brown, according to polls, was voted the most repulsive color. In none of the people interviewed, he did not evoke positive emotions, but was associated only with dirt and even death. Therefore, it is not surprising that dark gray-brown is used in some countries as a background on cigarette packs to reduce the sale of tobacco products.
Research on this topic in 2012 was conducted by the marketing agency GfK Bluemoon. By order of the authorities, specialists began to find out how to reduce the sale of tobacco products, and not increase it, as their work usually requires. And as a result of a survey of thousands of smokers, it turned out that the packs of dark gray-brown had the lowest attractiveness and looked like the inside of a cigarette of poor quality. The release of repulsive packs of cigarettes has led to a decrease in the number of smokers in Australia. And since 2016, cigarette packs of dark gray-brown color have been produced in other countries.