qualpal::colors Namespace Reference

Color representation classes for various color spaces. More...

Classes
class	DIN99d
	DIN99d color space representation. More...
class	HSL
	HSL (Hue, Saturation, Lightness) color representation. More...
class	Lab
	Lab color space representation (CIE L*a*b*) More...
class	LCHab
	LCHab color space representation (CIE L*C*h) More...
class	RGB
	RGB color representation with values in [0,1] range. More...
class	XYZ
	XYZ color representation (CIE 1931 color space) More...

Detailed Description

Color representation classes for various color spaces.

This namespace provides classes for representing colors in different color spaces commonly used in color science and palette generation. All classes support seamless conversion between color spaces through constructor overloads.

Supported Color Spaces:

• RGB: Standard red-green-blue with values normalized to [0,1]
• HSL: Hue-saturation-lightness for intuitive color manipulation
• XYZ: CIE 1931 device-independent intermediate color space
• Lab: CIE L*a*b* perceptually uniform color space
• DIN99d: Optimized perceptually uniform space for color differences

Usage Pattern:

// Create colors in any space
RGB red(1.0, 0.0, 0.0);
HSL orange(30, 1.0, 0.5);
 
// Convert between spaces automatically
RGB red_from_hsl(orange);  // Constructor conversion
Lab red_lab(red);          // Chain conversions
 
// Use with palette algorithms
std::vector<DIN99d> palette_colors;
auto indices = farthestPoints(5, palette_colors);

All color classes provide:

• Conversion constructors from other color spaces
• Accessor methods for individual components
• Consistent naming (r(), g(), b() for RGB; h(), s(), l() for HSL, etc.)

See also

metrics namespace for color difference calculations

farthestPoints() for palette selection algorithms