How many color names are there in English?

In English, there are thousands of color names, ranging from basic ones like red, blue, and green to more specialized names like cerulean, chartreuse, and periwinkle. The exact number can vary based on how one defines a color name, as new shades and terms are continually created. A commonly referenced list, such as the X11 color names, includes around 140 standard colors. However, the total can expand significantly when including variations and shades.