Nooree Na, a Ph.D. student of Color lab presented a poster about her recent study entitled, “Optimal RGB ratio for Nighttime Smartphone Users” on International Conference on Emotion and Sensibility 2015 held in Jeju, Korea. This study suggests the optimal RGB ratios for a display toward a more comfortable use of smartphones particularly under low illuminance, while not losing the aesthetic quality of display color. Her presentation was awarded with the best poster presentation. Congratulations!