Are blonde jokes racist

No, because blonde hair or any color hair isn't a race; it's a trait in which many people of different colors can naturally have. While people can be discriminatory towards those with blonde hair, just like someone can do the same with someone who's overweight, it doesn't make it racist. However, that doesn't mean they are any less ignorant since it's still grouping people based on a common factor, and usually grouping them all to being dumb.