Wild reason celebrities usually refuse to sign autographs with blue markers as Kai Cenat denies fan

There’s a reason celebrities steer clear of blue markers - and it's been brought to light again after streamer Kai Cenat refused to sign an autograph with one.

The award-winning US YouTuber went viral once again recently when he would only sign a fan's memorabilia with black ink.

The excited fan approached Kai at a Target store and handed him a blue marker pen.

"No blue marker - black marker! Give me that black marker, boy!" Kai sang, as the fan swapped his blue writing utensil for a black one.

The duo made polite conversation as Kai signed the fan's copy of his TIME cover story and other souvenirs.

He's not the only star to dodge blue markers, either; in 2023, The Crown star Claire Foy sparked discussion after a TikTok video showed her refusing to sign a magazine cover in blue.

"I don't do blue," she said as she proceeded to walk past the fan.

So, what is it about the color blue that celebrities just don't like? Aesthetics? Well no, think again...

During his stream, Kai gave some insight into the reasoning.

Addressing the camera, he said: "Fun fact about blue markers... you're about to forge your signature easier with blue markers. So always get black!"

But how true really is it? Christopher M. Naghibi, a banker and attorney, reckons the blue ink theory is a little outdated.

Speaking to TODAY, he explained: "The notion that blue ink can be forged more easily than black ink isn't necessarily accurate in the context of modern technology. It really stems from an old, outdated ideology."

Naghibi claims that blue ink in scanned or photocopied documents did not hold the same contrast as black ink did when copied - so that's why plenty of organizations would insist on people signing official documents using black ink.

However, with 'advancements in scanning and printing technology' this isn't as big a deal anymore.

And as Naghibi pointed out, both black and blue ink can be forged.

Despite the logic, it appears to be a superstition that many in the industry have believed.

Basketball player Patrick Beverley previously explained on the The Pat Bev Podcast with Rone podcast that he was told to avoid using a blue pen when signing fans' items.

Kai Cenat denied signing with a blue marker and told this fan to give him a black marker as he was worried about him trying to forge his signature 😭

Celebrities don’t usually sign with blue marker from the fear of forgery and fraud. pic.twitter.com/Hz3xOEejQh

— ryan 🤿 (@scubaryan_) September 22, 2025

The NBA star said: "I was taught, maybe after my third year that you’re not supposed to use a blue pen because they can use that signature and slap it on another jersey and sell that, but you can’t do that with a black pen or gray pen."

Better to be safe than sorry, I suppose!