---
title: "CSS 3.0 Valid Color Property"  
description: "CSS 3.0 Valid Color Property"  
author: "marcel ethan"  
published: 2013-04-02  
updated: 2013-04-02  
canonical: https://www.mindstick.com/forum/695/css-3-0-valid-color-property  
category: "css-css3"  
tags: ["css", "css3", "html", "html5", "html5 tags", "mindstick", "color property. css color property"]  
reading_time: 1 minute  

---

# CSS 3.0 Valid Color Property

Hi All!\
[Visual Studio](https://www.mindstick.com/articles/12378/visual-studio-for-mac-is-out-of-beta-preview-now-officially-available) 2012 (Ultimate) [states](https://yourviews.mindstick.com/story/1549/top-indian-states-with-muslim-population) (with a [red](https://yourviews.mindstick.com/view/81343/lonar-lake-turning-red-again) squiggly) that\
rgba(255, 255, 255, 0.4) is not a valid [color](https://www.mindstick.com/articles/77/how-to-split-form-background-color-in-c-sharp) [property](https://www.mindstick.com/blog/205/property-notification-in-c-sharp) [value](https://www.mindstick.com/articles/23219/an-optimized-description-adds-value-to-experience-and-in-turn-effectively-guest-posting-packages)\
But the W3C says it is. Is this a bug, or am I [missing](https://answers.mindstick.com/qa/52138/international-missing-children-s-day-2019-was-observed-on) something?\
Thanks in [advance](https://www.mindstick.com/blog/33258/jee-mains-and-jee-advance-exams)!

## Replies

### Reply by AVADHESH PATEL

Hi Marcel!\
Try this way\
It is a valid color property as per CSS3 standards;\
rgba(255, 255, 255, 0.4)The fourth parameter 0.4 refers to the opacity which is a CSS3 feature, and a in rgba means alpha\
You could also try this in [Visual](https://yourviews.mindstick.com/audio/1147/through-the-lens-a-visual-exploration-of-the-world) [Studio](https://answers.mindstick.com/qa/116181/google-launches-workspace-studio-to-create-automated-gemini-powered-agents) to see that it doesn't flag an error;\
rgb(255, 255, 255);\


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Original Source: https://www.mindstick.com/forum/695/css-3-0-valid-color-property

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