I very much prefer a more yellow light than a more blue light. I feel like I'm in an asylum when I'm somewhere that has real blue lightbulbs. Shouldn't somethi

I very much prefer a more yellow light than a more blue light. I feel like I'm in an asylum when I'm somewhere that has real blue lightbulbs. Shouldn't something that only emits one color have a perfect CRI? Or are lightbulbs assumed to mimick the sun and that's why they don't have perfect ratings?