Deciding a colour for a product is a significant task for designers to attract consumer attention and communicate brand messages. It requires an initial analysis that explores consumer expectations within the sector, and this information is then used to inform development of a product design. This article discusses the application of the product colour development process during the initial phase of product design. Using a case study approach, one particular product categorya dishwashing liquid product was selected based on the suggestion from a leading U.K. consumer goods manufacturing company that colour is a major design factor for this product category. In the first phase of the study, interviews and an online survey were carried out with consumers (to explore what elements are important when they purchase a washing-up liquid product). In the second phase of the study, a colour meaning experiment was conducted to explore possible colours for dishwashing liquid packaging using a semantic differential method. The results show that yellowish and bluish green colours evoke positive responses while saturated and dark green colours are perceived more negatively.