Crimson connects blood donors with hospitals and blood banks — simply, privately, and in minutes. No app needed. Free forever.
Every year, thousands of Australians need blood transfusions in emergencies. Donors are willing. Blood banks are searching. But the connection is slow, manual, and broken.
Crimson fixes that. A simple, private, verified network — where donors register once, and blood banks find the right match in seconds, not hours.
We started in Australia. We're building for the world.
Join the networkNo bureaucracy. Register in 2 minutes from any phone or browser.
Your exact address is never shared. You're always in control of who you respond to.
Every blood bank is verified before gaining access. Donors are protected by design.
Donors register with just their name, mobile, blood group, and suburb. Done. No forms, no waiting.
Blood banks see your approximate suburb, never your address. Your contact details are yours to share — or not.
Optional GPS lets blood banks find the closest available donor. Faster responses when minutes matter.
Blood banks and hospitals go through a credential check before accessing the network. No exceptions.
All contact between donors and blood banks happens inside Crimson. No phone numbers shared directly.
No fees. No subscriptions. No hidden costs. Crimson is a public good — for donors, blood banks, and hospitals.
Share your name, mobile number, blood group, and suburb. No paperwork, no app to download.
Blood banks only see your approximate location — your suburb or postcode. Your exact address is never shared.
When a blood bank near you needs your blood group, they reach out through the portal. You decide whether to respond.
Provide your hospital name, registration number, and contact details. We verify before activating your account.
Enter the blood group you need and a suburb or city. Crimson shows matching donors nearby, instantly.
Reach out to matched donors securely within Crimson. No personal data is exposed until a donor agrees to respond.
Join Australians who've already registered. Your blood group could save someone's life this week.
Search for verified donors by blood group and location. Connect securely — no cold calls, no directory guessing.
"Registered in 90 seconds. The following week I got a message through the portal — a hospital 3 km away needed my blood type urgently. I went in the same day. I had no idea it could be this simple."
"We had an emergency and needed O-negative within hours. Crimson showed us four matches in our suburb. We made contact through the portal and had a donor confirmed in 40 minutes. This service genuinely saves lives."
"I always wanted to donate but never knew how to get started. Crimson made it easy. I registered during my lunch break. My privacy was respected the whole time — no spam, no sales calls, just a genuine community."
Your details stay private. Blood banks only see your blood group and approximate location — never your phone number unless you choose to share it.
We verify every institution before granting access. This keeps the network safe and trusted for everyone.
Yes — completely free for donors and blood banks alike. Always will be.
No one directly. Blood banks only see your blood group and approximate suburb — never your name or phone number — until you choose to respond to a request through the portal.
All eight: A+, A−, B+, B−, AB+, AB−, O+, and O−. If you don't know your blood group, register anyway — we'll note it and you can update it later.
No. Crimson works entirely in your browser — on any phone, tablet, or computer. No app download required.
GPS is optional. If you allow it, we use your current location to find the closest match — useful if you're travelling. Either way, blood banks only see an approximate area, not your exact address.
To protect donors. Only licensed hospitals and registered blood banks with verified credentials can search the network. We review every application before granting access.
Yes, at any time. Contact us and we'll remove your data within 24 hours — no questions asked.
We're launching in Australia first, with India and other markets planned. If you'd like Crimson in your country, reach out — we'd love to hear from you.
Whether you're a donor, a hospital, or just curious — we'd love to hear from you.