所以我正在努力让我的标题每天都改变颜色,并且我试图使用随机颜色来创建它。标题中有 2 种颜色,我正在制作它们的互补色。第一种颜色是随机生成的,然后通过 150` 更改色调来修改第二种颜色。The problem is when certain colors are chosen, they could be either too vibrant or dark. 我正在运行一个检查,以便我可以稍微控制亮度值,但仍有一些颜色太亮(例如极黄色)。我将在下面发布我的代码。任何帮助或建议表示赞赏!谢谢!
// grab a random color on hue
$h = rand(0,360);
// color values 50-120 tend to be extremely bright,
// make adjustments to the S and L accordingly
// a better solution is available?
if ($h > 50 && $h < 120) {
$s = rand(60,80);
$l = rand(30,50);
} else {
$s = rand(60,90);
$l = rand(38,63);
}
// declare string to place as css in file for primary color
$randomColor = "hsl(". $h .",". $s ."%,". $l ."%)";
// declare degree for secondary color (30 = analogous, 150 = complimentary)
$degree = 150;
// point to secondary color randomly on either side of chart
$bool = rand(0,1);
if ($bool) {
$x = $degree;
} else {
$x = -$degree;
}
// set value of the new hue
$nh = $h + $degree;
// if the new hue is above 360 or below 0, make adjustments accordingly
if ($nh > 360) {
$nh -= 360;
}
if ($nh < 0 ) {
$nh = 360 - $nh;
}
// set the secondary color
$secondaryColor = "hsl(". abs($h + $x) .",". $s ."%,". $l ."%)";
这看起来很简单,我相信有更好的方法。我环顾四周,但我注意到的只是色调等的基本公式。再次感谢!