If these are the LEDs “TN3535 5000K CRI 90”, their koef3’s test results look pretty bad:
Duv 0.0055 (ugly greenish tint) and CCT 6194 (way too cold).
I was looking forward to the 519A because (1) they’re more neutral than NTG/FFL emitters (for photography), and (2) I can always dedome them later for a rosier tint if I change my mind.