YU is coming up blank on that site now for some reason, but that's the stock beige colour as in the photo.
I bought my dye from here; https://www.liquidleather.co.uk/leather-dyes-c48/dyes-c91/leather-dye-1l-p144
In the options for checkout, it'll ask for the manufacturer and colour code. They have it on file so are able to mix it without you having to send something for them to match the colour against.