To me it’s texture. Everything in my kitchen pictured is white. High gloss white slab doors contrast with matte Carrara marble which is slightly grey. The walls are warm white. The upper cabinets are white glass with stainless steel trim. Backsplash is a slightly different shade of white.

My sister had an all white kitchen. Her cabinets had glass in some of them, white subway tile backsplash, carerra marble counters, glass knobs. Her floors were dark maple. Stainless appliances. Beautiful chrome faucet. It didn’t look boring or bland at all. She really misses that kitchen.

It depends on the light levels in the room. If the room is North facing I would avoid all white as it can appear grey. If it has a good aspect and is really light then all white can work. Anything that contrasts with it will be really noticeable so should be very considered and have warmth and texture.