Shade into is an expression used to signify a gradual transition from one state to another. It is a phrase that is commonly used in literature, art, and everyday language to describe a variety of situations such as the gradual change in color or the merging of two different ideas. Some common synonyms for the phrase shade into include blend, merge, transition, shift, and transform. These words all refer to a smooth and natural progression from one state to another. Whatever the context may be, these synonyms allow us to express ourselves in new and creative ways while still conveying the same general idea.