The Swapfiets tyres are Vittoria Adventure Tech. The blue ones aren't available yet. Perhaps delayed by Covid? The smallest ones are 32mm. https://www.vittoria.com/ww/en/tyres/city-hybrid/adventure-tech
The TdF ones for Jumbo-Visma were Vittoria Corsa G 2.0, but they've only been sold to the public in black. No word on blue ones.
If you want an all-blue road tyre I think Kenda cheapies might be your only option https://www.bikester.co.uk/kenda-kontender-k-196-tyre-28-wire-bead-M108546.html?vgid=G490469&&utm_source=google&utm_medium=organic&utm_campaign=shopping&utm_content=surfaces_across_google
If blue sidewalls with black tread are to your taste there are various NOS ones on ebay, from Michelin and others
https://www.ebay.co.uk/itm/-/370966909146?mkevt=1&mkcid=16&mkrid=711-127632-2357-0&media=GMAIL&sojTags=media%3Dmedia
https://www.ebay.co.uk/itm/-/124142751833?mkevt=1&mkcid=16&mkrid=711-127632-2357-0&media=GMAIL&sojTags=media%3Dmedia
Also Wiggle https://www.wiggle.co.uk/michelin-power-road-folding-tyre?lang=en&curr=GBP&dest=1&sku=105185758
I saw a Swapfiets yesterday. This one had a blue Continental on the front I think.
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The Swapfiets tyres are Vittoria Adventure Tech. The blue ones aren't available yet. Perhaps delayed by Covid? The smallest ones are 32mm. https://www.vittoria.com/ww/en/tyres/city-hybrid/adventure-tech
The TdF ones for Jumbo-Visma were Vittoria Corsa G 2.0, but they've only been sold to the public in black. No word on blue ones.
If you want an all-blue road tyre I think Kenda cheapies might be your only option
https://www.bikester.co.uk/kenda-kontender-k-196-tyre-28-wire-bead-M108546.html?vgid=G490469&&utm_source=google&utm_medium=organic&utm_campaign=shopping&utm_content=surfaces_across_google
If blue sidewalls with black tread are to your taste there are various NOS ones on ebay, from Michelin and others
https://www.ebay.co.uk/itm/-/370966909146?mkevt=1&mkcid=16&mkrid=711-127632-2357-0&media=GMAIL&sojTags=media%3Dmedia
https://www.ebay.co.uk/itm/-/124142751833?mkevt=1&mkcid=16&mkrid=711-127632-2357-0&media=GMAIL&sojTags=media%3Dmedia
Also Wiggle https://www.wiggle.co.uk/michelin-power-road-folding-tyre?lang=en&curr=GBP&dest=1&sku=105185758