While it is really hard to find scientific proof that the colour lilac is calming or not, I think it depends on what kind of person you are, and what you like and hate. For example., What if you hate the colour lilac?, then the colour lilac won't calm you down at all.
Lilac is considered an Easter color because in some areas, the lilac bush blooms at that time. Otherwise it is considered a feminine color or romantic color.
Mixing lilac and light blue typically results in a soft, muted lavender or periwinkle shade. The combination of the purple tones from lilac and the coolness of light blue creates a gentle, calming color that leans towards a light purple-blue hue. The exact shade can vary depending on the proportions used in the mix.
The color was named after the flower.
The light color known to be calming and soothing is blue.
lilac
lilac and violet
Lilac
lilac
"Lilac" in English is lillà for the plant and lilla for the color in Italian.
Yellow
Many people find the color blue to be the most calming and soothing.
A calming color recommended for promoting better sleep is blue.