isDark function

bool isDark(Color color)

Determines whether a given color is considered dark.

The isDark function calculates the luminance of the input color and returns true if the luminance is less than 0.5, indicating that the color is dark. Otherwise, it returns false, indicating that the color is light.

Luminance is a measure of the brightness of a color, with 0.0 being completely dark and 1.0 being completely light.

Example:

Color darkColor = Colors.black;
bool result = isDark(darkColor); // Returns true

Color lightColor = Colors.white;
result = isDark(lightColor); // Returns false

The function is commonly used to determine the readability of text on a background color by choosing appropriate text color based on the darkness of the background.

See also:

• Color.computeLuminance, the method used to calculate color luminance.

Implementation

bool isDark(Color color) {
  return color.computeLuminance() < 0.5;
}