Researchers analyzed complete archival charts covering 513 Chanel lipstick colors from 1960 to 2020. The range grew from 12 colors in 1960 to 55 in 2005, then became smaller; darker shades, including near-black colors, became prominent between 1995 and 2010.

The charts showed a continuing emphasis on yellowish reds, recurring highly vivid reds and relatively few bluish reds. Differences in shimmer, opacity and finish also helped distinguish lipsticks, but those features were not captured by the color-chart analysis.