Sulekha Sampurna Neel Satadal is a permanent blue ink that has been developed in-house keeping in mind your specific needs. From Zero to Infinity. May “Su-Lekha”: good writing, prevail. May the spark of life begin in the darkest recesses of the black hole. May the cosmological constant be a self-sustaining truism. May light conquer space, time, and triumph over the unknown.