- Tags: Color
- Categories: CSS Functions, CSS Reference, Reference
Quick Reference
The HSLA color value is specified with the hsla() function, which has the following syntax: hsla(hue, saturation, lightness, alpha).
- Hue is a degree on the color wheel (from 0 to 360) – 0 (or 360) is red, 120 is green, 240 is blue
- Saturation is a percentage value – 0% means a shade of gray and 100% is the full color
- Lightness is a percentage – 0% is black, 100% is white
- Alpha is a number between 0.0 (fully transparent) and 1.0 (fully opaque)
div {
color: hsla(0, 100%, 50%, 0.5); /* red with 0.5 opacity */
}
Syntax
hsla(hue, saturation, lightness, alpha)
Values
Value | Description |
---|---|
hue | Defines a degree on the color wheel (from 0 to 360) – 0 (or 360) is red, 120 is green, 240 is blue |
saturation | Defines the saturation; 0% is a shade of gray and 100% is the full color (full saturation) |
lightness | Defines the lightness; 0% is black, 50% is normal, and 100% is white |
alpha | Defines the opacity as a number between 0.0 (fully transparent) and 1.0 (fully opaque) |
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CSS NOTES:
- The “inherit”, “initial” and “unset” keywords can be used with any CSS property to set its value
- In CSS there are many ways to express a color value in a property
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