Often described as looking slightly muted or golden-green rather than clearly pink or clearly yellow, and sometimes described as not fitting neatly into a warm/cool split at all.
Why informal tests aren’t reliable
Olive undertone is frequently the exact case where a simple warm/cool test breaks down — its own muted, mixed character doesn't map cleanly onto a two-option test, which is a limitation of the test, not the skin.
Camera white balance and screen calibration both shift how skin looks in a photo — a phone photo taken under warm indoor light can look distinctly warmer than the same skin looks in daylight, and vice versa.
Compare muted, earthy colours against brighter, cleaner colours of the same hue — olive undertones are often reported to read more comfortably with the muted version.
Muted earth tones, olive-adjacent greens and warm neutrals are commonly reported to feel comfortable.
Very bright, clean primary colours are sometimes reported as a harder contrast — worth comparing directly.