getLuminance method
Returns the luminance of the color.
Luminance is calculated using a specific formula that takes into account the perceived brightness of the red, green, and blue components. It provides a better representation of how bright a color is compared to brightness, which is more linear.
Example:
Color color = Color(0xFF42A5F5);
double luminance = color.getLuminance();
print(luminance); // Output: 0.309 (indicating how bright the color is)
Implementation
double getLuminance() => computeLuminance();