- Color As Hue
- Color - Business idioms
- Color Changer-Coloring Editor
- Color - Clothing idioms
- Color Expression by Lanco
- Color Food idioms in English
- Crayola! - Color Names App
- Colour Inspiration Tool
- COLOR JACK
- Color Kanji Atom
- Color Kanji Plus
- Color Lab – Coloring Changer and Photo Editor
- Color Presto
- Color - Medical idioms
- Color of China
- Color Quality Control
- Color Splash Effect.s - Photo Editor for Selective Recolor on Black & White Image
- Colour Strain
- Color Theory Quick Reference
- Color Tiles Manipulative
- Color Wheel
- Color Wheel - Basic Schemes
- Color Wheel - Color schemes
- Colorado DMV CO Test Reviewer
- Colorado DMV - CO Permit test
- Colorado Football Schedules
- Colorado Law Statutes
- Colorado Legislative Directory
- Colorado Revised Statutes 2019
- Colorado Revised Statutes 2020
- Colorado Rocky Mtn Wildflowers
- Colorado State Football App
- Colorado Wildflower Search
- ColorCard: Palette Tool
- ColorContrastChecker
- Colore: explore and choose colors, for design and fun
- Coloreal: Pro color selectors
- PickerFull - Color Extractor
- Coloring Book - Mandalapp
- Coloring Book for Funky Funkin
- Coloring Fans Freddys FNAF
- Coloring Studio
- Colorix.com Pro
- ColorLab-Born for Color
- ColorMax - Aesthetic Palettes
- ColorMixer Mix Unmix & Convert
- ColorName*
- ColorNote 慣用色名編
- ColorName*
- ColorNote 慣用色名編
- ColorPrism - Farben in Echtzeit scannen
- Colours?
- ColorsProg - Colors Manager
- ColorTouch
- Colorvalue - Get color values
- COLORWAND
- ColorWheelFree
- Colour & Emotion
- Colour Picker — RGB & HEX Colour Converter Tool
- Colourful Consultation
- Colourpin
- COLREG Tutor
- Columbia County Sheriff AR
- Columbia Local School District
- Columbus Collects
- Columbus GA Recycles
- Coláiste Cholmcille
- Coláiste de hÍde
- Coláiste Iascaigh
- Coláiste Iósaef School
- Coláiste Mhaigh Éne