The Chelsea 23-24 Home Shirt features a unique Iridescent effect on the Chelsea Crest which is why it displays various colors from different angles.
Iridescent CHELSEA 23-24 CREST. Unlike every year, when the classic logo is utilized this year, Nike has created an iridescent effect on the Chelsea Crest, making the Chelsea logo visible on the shirt sparkle from every angle.
Iridescence is a mix of colors among a variety of hues. Thus, images that have the iridescent effect will display many different colors when seen from a variety of angles.
But, from a certain angle it appears that the Chelsea Crest appears to be green/blue which makes it appear as if the Chelsea emblem appear to melt into the hue of the shirt.