Two tone LED night lamp
"CRI-90" Is a bullshit marketing term used to sell stuff. If you want to "build a lamp like that", buy one. If you want a lamp with simular color you can probalby replicate it with an RGB LED, but setting the brightness of each LED to aproximate the blackbody of the lamp you want, if you want to do it well, you would need to get a somewhat accurate spectrometer and fiddle the brightnesses. All of this is a lot of effort when you can just buy one, so if you are going to do it understand you are going to spend a lot of time and money replicating someone elses work.