Plant pigments are an alternative source for synthetic dyes which are generally toxic and costlier. Various plant parts contain different color pigments chemically either anthocyanins, xanthophylls, carotenoids etc. This chemical diversity exhibits different color reactions depends upon pH of the solution. In the present research work, an attempt has been made to understand the sensitivity of color solutions to acidic and alkaline environment and make use of such color reactions for titrimetric analysis. In present research work, we have selected carrot, Beetroots, watermelon, sweet almond fruits, red sandal bark, hibiscus, lantana and calendula flowers, pomegranate seeds. The fresh parts of all the selected plants were collected in their flowering seasons from the nearby area of Kolhapur and 5g each was macerated with ethanol: water (70:30) for 24h shaking frequently. The filtrate was evaporated to dryness at low temp (450C) and the residue obtained was subjected to pH sensitivity test of 1% w/v solutions at normal temp using digital pH meter. The different strength solutions of each plant extracts were tested for acid-base titrations as indicators along with commercial synthetic indicators. From the results, it was confirmed that watermelon, red sandal bark, pomegranate seeds show sharp end points in comparison with synthetic dyes. From the data obtained it is confirmed that natural plant pigments can serve as alternative indicators for various acid-base titrations at laboratory scale and is possible to develop pH indicator papers which are non-toxic, economical and biodegradable compare to synthetic dyes.