What is the ugliest hex code?

The ugliest hex code is often cited as #4A412A or #413A26 or #6B5B34, which correspond to a murky, dirty brownish-green color that was found in research to be the least liked color by consumers. This research was conducted in Australia when the government was looking for a color for plain tobacco packaging that would be as unattractive as possible to discourage smoking. Researchers tested various colors with smokers and found that a drab dark brown with greenish undertones, officially called Pantone 448 C, was rated as the least appealing, associated with words like dirty, tar, and death. Its hex equivalent is approximately #4A412A, though some approximations list it as #5D4E37. This color is described as a dull, muddy, olive-brown, sewage-like green-brown that most people find unappealing. The Australian government adopted Pantone 448 C for plain cigarette packs in 2012. Other candidates for ugliest hex code based on color preference studies include murky yellows like #8B8B00 or sickly greens. However, beauty is subjective, and what one person finds ugly another might find earthy or interesting, but in marketing research, that drab brown-green is consistently rated lowest.