CJK Compatibility Ideograph FA84

It is an encoded form of 彩, not a separate meaning. Read it as the same Han character, used for color, pattern, and ornament. Its pronunciation depends on the language and surrounding text.

U+FA84 is an encoding form for legacy interchange: it is in the compatibility-ideograph range included for round-trip conversion with KPS 10721-2000. That lets characters converted through the older character set and back retain their encoding identity. The older written history belongs to 彩: the Shuowen Jiezi, an old Chinese character dictionary, describes it as patterned writing and analyzes it as 彡 (a meaning component associated with ornament) plus 采 (a sound component).

Why Unicode turns U+FA84 into 彩

Unicode's canonical mapping—a built-in equivalence rule for normalization—maps U+FA84 to U+5F69 彩, so normalization rewrites it as 彩. The code points differ, but they represent the same Han character; once normalized, the original U+FA84 identity is lost.

A font may draw the two forms alike or show regional Han glyph-style differences. The visible shape alone cannot tell you which code point is stored.