Took my 18C iridescent light blue jumbo to my local Chanel boutique and compared it with 19C light blue m/l (jumbo wasn’t available).
The lighting was more yellow and warm in the boutique, but I think the 19C light blue looks pretty true to color in the pictures. The caviar has a nice sheen

There’s a very subtle hint of light green when viewed at different angles. This blue is gorgeous
My iridescent light blue appeared much darker under the warm and yellow lighting
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