Here is a good selection of kids’ books that can be used to teach the color blue:

• And to Name But Just a Few: Red, Yellow, Green, and Blue by Laurie Rosenwald
• Blue 2: A Pop-up Book for Children by David A. Carter
• Blue Goes to School (Blue’s Clues Series) by Angela C. Santomero
• Blue Hat, Green Hat by Sandra Boynton
• Blue Moo by Sandra Boynton
• Blue’s Best Rainy Day (Blue’s Clues Series) by Deborah Reber
• Blue’s Big Parade by Justin Spelvin
• Blue’s Checkup (Blue’s Clues) by Sarah Albee
• Blue’s Clues Chanukah (Blue’s Clues Series) by Jessica Lissy
• Blue’s Clues Holiday by Angela C. Santomero
• Blue’s Fall Day by Lauryn Silverhardt
• Blue’s Halloween Hide-and-Seek by Michael T. Smith
• Blue’s Snack Party by Kevin Cardinali
• Blue’s Thanksgiving Feast (Blue’s Clues Series) by Jessica Lissy
• Brown Bear, Brown Bear, What Do You See? by Bill Martin, Jr.
• Colors: Blue by Esther Sarfatti
• Counting With Blue by Lauryn Silverhardt
• Good Night, Blue by Angela C. Santomero
• Guess Who Loves Blue! by Deborah Reber (good for Valentine’s Day)
• Healthy Snacks With Blue by J-P Chanda
• In a Blue Room by Jim Averbeck
• It’s Valentine’s Day! (Blue’s Clues Series) by Brooke Lindner
• Little Blue and Little Yellow by Leo Lionni
• Old, New, Red, Blue (Step Into Reading – story about race cars) by Lagonegro
  
• One Fish, Two Fish, Red Fish, Blue Fish by Dr. Seuss
• Sky the Blue Fairy by Daisy Meadows
• Thomas and Friends: Blue Train, Green Train by Rev. W. Awdry
• Welcome to Blue’s Clues! (Blue’s Clues Series) by Angela C. Santomero
• One For Me, One For You: A Book About Sharing (Blue’s Clues Series) by Sarah Albee