What is the colour of base?

In chemistry, bases exhibit distinct color changes when mixed with certain indicators. When phenolphthalein is added to a basic solution, it turns pink; this is because phenolphthalein is colourless in acidic or neutral conditions but changes to pink in alkaline (basic) conditions. On the other hand, when methyl orange is added to a base, it turns yellow. Methyl orange is typically red in acidic conditions and changes to yellow as the solution becomes more alkaline. These colour changes help chemists determine whether a substance is acidic or basic and are commonly used in titration experiments to identify the endpoint.