Jillian Tamaki is an illustrator, author, and comics artist living in Toronto, Ontario. She is the co-creator, with her cousin Mariko Tamaki, of the young adult graphic novel This One Summer, which won a Caldecott Honor in 2015. She makes books and comics for people of all ages, including They Say Blue, a picture book about looking and thinking.

Now available as a board book, the award-winning They Say Blue is a playful, poetic exploration of color and point of view
 
In captivating paintings full of movement and transformation, we follow a young girl through a year or a day as she examines the colors in the world around her. Egg yolks are sunny orange as expected, yet water cupped in her hands isn't blue like they say. But maybe a blue whale is blue. She doesn't know; she hasn't seen one.
Playful and philosophical, They Say Blue is a book about color as well as perspective, about the things we can see and the things we can only wonder at.