Cream and charcoal gray keep the whole palette light without washing you out. There's warmth in both, and the brightness reads clean rather than stark. The collar holds its shape all day without that wilted-polo look. Monday standup, no jacket, and you still look like you meant it. When the outfit's not a question, you show up sharper. Simple math.
Finish with suede desert boots in sand or cognac and a brown leather belt.