// The relative luminance of a color is defined as (L = 0.2126 * R + 0.7152 * G + 0.0722 * B)
// based on W3C Recommendations (https://www.w3.org/TR/WCAG20/)
constexpr float BRIGHTNESS_THRESHOLD = 0.179f;
// The relative luminance of a color is defined as (L = 0.2126 * R + 0.7152 * G + 0.0722 * B)
// based on W3C Recommendations (https://www.w3.org/TR/WCAG20/)
constexpr float BRIGHTNESS_THRESHOLD = 0.179f;