CSS Colors
Understand colors deeply: names, hex, rgb, and when to use each. Learn how color affects user emotion and readability.
David Miller
November 22, 2025
4.9k102
Colors decide the feel of a website.
Ways to write colors
Color names
color: red;
Hex colors
color: #ff0000;
RGB
color: rgb(255, 0, 0);
Background color
div {
background-color: #f5f5f5;
}
Real world meaning
- blue → trust
- green → success
- red → warning
- gray → neutral
UI example
Button with background color:
button {
background: green;
color: white;
}
Remember
- Keep contrast readable
- Avoid too many bright colors
- Consistency matters
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