Do you have to use web safe colors?

Related questions

1. What are Web colors called?
2. Is Red Violet a warm color?
3. Are all hex colors Web Safe?
4. What colors are web safe?
5. Is the movie Primary Colors based on Bill Clinton?
6. What is Colour palette in computer?
7. What is RGB depth?
8. What is RGB image in Matlab?
9. What does out of Web color warning mean?
10. What is a Web safe font?

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