How do i know if i need warm or cool colour foundation?

im thinking about getting l'oreal true match foundation but i dont know if i should get warm or cool. how do i know?How do i know if i need warm or cool colour foundation?
Warm Color Group





* Your hair is naturally black or brown (brown with reddish or copper flecks). Your eyes are brown, and your complexion is olive or golden and tans easily





* Your natural hair ranges from light, golden to dark blonde, your eyes are dark brown and your skin is golden or olive and tans easily





* Your hair is naturally red or light auburn with dark blonde flecks. Your eyes are either green or brown, and your skin tone is beige, tanning easily





* Your hair is naturally a reddish to golden brown, your eye color is blue and your complexion is light beige, tanning easily





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Cool Color Group





* Your natural hair color is light to medium brown, you have either greenish, hazel, or blue eyes and you burn easily (but have naturally rosy cheeks)





* Your hair is naturally a darkened ash blonde, your eyes are either hazel or blue and your complexion is very fair to pale





* Your hair color is dark brown, your eyes are blue and you have a pink tone to your fair or pale skin





* You're a naturally light to medium brunette, your eyes are a blue-gray to light-green color, your face is fair to pale with a hint of rose in your cheeks





* Your hair is naturally red or dark brunette, your eyes are a very dark brown, and your skin is pale to fair with very rosy cheeksHow do i know if i need warm or cool colour foundation?
warm and cool refer to the undertones of your skin. An easy rule of thumb though it is not totally accurate is if your skin burns you are warm and if it tans you are cool. If your undertones are rosy or red you are warm and if they are neutral or yellow then you are cool.
KRYOLAN





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HAVE A LOT OF COLOR,S .