Best match I found: Seoul Semiconductor S1W0-3535657003-00000000-00004 — 3 W-class cool white LED, 6500 K, 3535 / 1414 package, ~2.85 V at 700 mA, available from Digi-Key.

Other good candidates:

I also checked the Flux library: no exact 3 W / 5000–7000 K LED match appears to be available, but lower-power white LEDs in that CCT range are present. My recommendation is the Seoul 3535 part if you want a compact PCB-mounted 3 W LED.

I’ll check the Flux library first, then cross-check purchasable 450 nm / 3 W blue LED options from distributors.

Best Flux-library match: L1C1-RYL1000000000 — Lumileds LUXEON C royal-blue LED, 440–460 nm, SMD, active/available; not labeled “3 W” in the library result, but it’s a high-power 450 nm-class emitter.

Good 3 W / 450 nm candidates from web/distributor research:

My recommendation: use Samsung SPHBL1L3DH00L4A4B0 or Cree XPGDRY-L1-0000-00501 if you want a reputable 3535-style high-power LED; use L1C1-RYL1000000000 if you want something already available in the Flux library.