Convert HSL color values to HSLA format with alpha transparency — perfect for adding opacity to theme colors while maintaining HSL format
HSLA values will appear here...
Convert HSL color values to HSLA format to add alpha transparency control while maintaining the HSL color model. While HSL format hsl(9, 100%, 65%) represents solid colors, HSLA format hsla(9, 100%, 65%, 0.8) adds an alpha channel for transparency. This is ideal when you need to add opacity to theme colors without switching to RGB-based formats.
Paste an HSL color value (e.g., hsl(9, 100%, 65%))
View the HSLA equivalent with alpha channel
Adjust alpha value if needed (0 = transparent, 1 = opaque)
Copy the HSLA value for your CSS or design system
Add alpha transparency to existing HSL colors
Convert HSL to HSLA for CSS hsla() functions
Create semi-transparent versions of theme colors
Build overlays and modals with HSL-based opacity
Generate HSLA values for theme systems with transparency
Instant HSL to HSLA conversion
Live color preview with transparency
Alpha channel for transparency control
Copy HSLA values with one click
Auto-detects HSL format
Runs locally in your browser