Can LED lights burn leaves?

[IngieBee]

Some of my orchids, mostly oncidiums, are getting massive tans, weirdly, due to the setup being rather equal in light everywhere, my phals aren't getting lighter leaves and aren't changing color, as they're still deep green, almost what I consider dark green! A tall plant touches the LEDs even with no I'll effects!

I didn't think they could burn, but the discoloration to a deep solid burgandy/brown pb on my Oncidium types has me a wee bit nervous and I'd appreciate a bit of confirmation that it's not possible to burn under LEDs ?

I do have an US humidifier, so maybe they could dry my plants out without it?

I just don't see a thread on this and would appreciate knowing for sure if non-UV or IR LEDs are completely safe? Thanks!