HslColor constructor
A color in the HSL color space.
hue must be >= 0
and <= 360
.
saturation and lightness must both be >= 0
and <= 100
.
alpha
must be >= 0
and <= 255
.
Implementation
const HslColor(
this.hue,
this.saturation,
this.lightness, [
int alpha = 255,
]) : assert(hue >= 0 && hue <= 360),
assert(saturation >= 0 && saturation <= 100),
assert(lightness >= 0 && lightness <= 100),
assert(alpha >= 0 && alpha <= 255),
super(alpha: alpha);