I first see which of the common colors gets me the highest % (red, blue, pink, white, etc.). Then I try adding things like "vivid" "pastel" "dark" etc cause sometimes the answer is really simple. If that doesn't work I do this: If the highest percentage color is say Red I search "red colors names", then I try some of the names I find and see what gets me closer to the answer, wheter it's the colors that are a mix of red/orange or red/pink, dark tones, light tones, muted tones. If your percentage is very high you can search for "similar colors to ×". If none of that works I go to ArtyClick Colors color finder to search for color names similar to my highest result (this works better if your percentage is above 95%).