“color” in Japanese is 色, read shoku, shiki, iro (しょく, しき, いろ). It is a Grade 2 Kyōiku kanji, taught in year 2 of Japanese elementary school, and appears in words such as 色々 (various).
What does 色 mean?
好きな色は青だ。
Same sound, different character — the classic trap. Compare them side by side: