The term 'slightly blue' can be represented by two crossword solutions: 'SALTY' (5 letters) and 'RACY' (4 letters). SALTY is a term used to describe food or drink that has a high concentration of salt, while RACY is a term used to describe something that is exciting, daring, or risque. Both terms can be used to describe the color slightly blue, as it is a color that is not overly bright or dark, but rather a muted shade of blue.