Both are correct… for the most part. ”Coral” wouldn’t be an undertone as much as it would be a shade of red… a pink-toned orange. If you’re into coral, choose one that is as pink as you can, like Revlon Superlustrous CoralBerry lipstick
When looking for a true red lipstick, reds with pink tones or blue undertones will be your friends. They will flatter the cool tones of your skin. Lipsticks with blue undertones will also make your teeth look whiter!
Revlon Matte in In The Red
Revlon Colorburst in True Red
Covergirl LipPerfection in Tempt (To all of the world, this shade is called “Tempt” not “Tempt Seduction”… “Seduction” is the name in Espanol…)
Maybelline ColorSensational in Red Revolution
Maybelline ColorSensational in Red Revival
Wet n Wild MegaLast in Red Velvet
NYX Black Label in Hebe
Lipsticks with blue undertones are flattering on all skin tones, including those with dark skin.
If you have warm undertones to your skin, you may also choose reds that have a yellow undertone to them (think fire-engine red, or orangey-shades). These will compliment your skin tone as well.