i actually disagree! not to bring back a certain children's hospital and say "it's literally color theory" unironically, but... it's literally color theory. both of these color palettes are virtually complimentary and look pretty nice together
youve got reds, greens, and blues:
and purples, blues, yellows, and oranges:
(you'll have to click on the images to see the full thing, i don't want to put them one after the other and make this post even longer than it already is. sorry for the low resolution im doing this on my phone)
of course there's variation in the values and saturation, but imo that's a bit of a given ¯\_(ツ)_/¯