The odds on finding a batch of tiles that where the same firing as the one you have are near on impossible. Hence the colour will be different even if you find some.
Might start thinking about removing the broken ones and making a feature of the wall by placing hand painted tiles in there (dogs, cats, flowers, village scene etc).
All advice is given with-out seeing the job, and hence all advice MUST be taken as advice with limited knowledge on the exact situation. NO responsibility can or will be taken. And yes, I am a licensed Plumber and Drainer with my own business in Brisbane Australia.
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