There is no recognised or customary hue associated with turning 75. The birthday recipient’s favourite hues or hues that complement the party’s theme are suggested. However, platinum is actually the customary colour for a 70th wedding anniversary. Some people mistakenly believe that platinum is the right colour for a 75th birthday.
The 75th birthday is an important milestone, so it’s good to use vibrant, enjoyable colours. Once a colour scheme has been decided upon, tableware, party favours, and decorations should all be picked in that colour scheme.
One entertaining suggestion is to have everyone at the party wear a different colour from the birthday person or lady so that they stand out from the crowd.