Warm a blue kitchen wall by choosing soft ochre or camel paint tones. These warm neutral wall colors add depth without overpowering blue cabinetry. Start with lighting and hardware changes first, then paint walls to enhance warmth. Ochre walls harmonize with brass fixtures and terracotta accents, anchoring the cool-blue tones in a cozy color story. This layering creates a cohesive, inviting kitchen environment before considering more intensive updates.